Fewer project interruptions
Keep replacement blades beside the cutting mat so a skipped thread does not stop a quilt, garment or class session.
Ten fresh edges ready when the work is flowing
Keep your 45mm rotary cutter cutting cleanly project after project
The OLFA RB45-10 pack gives regular quilters, sewing rooms and busy makers ten genuine 45mm tungsten-steel replacement blades in one protective case. When a blade starts skipping fibres or dragging fabric, replace it promptly and keep the project moving with the cutting performance you expect.
- Ten genuine OLFA RB45 blades provide a practical reserve for frequent cutting and shared workspaces.
- Tungsten-steel construction gives each blade a strong, precisely honed straight edge.
- 45mm all-purpose size suits everyday quilting, dressmaking and general craft cutting.
- One protective case keeps the ten unused blades together until they are needed.
10 blades in one case
10 bladesOne complete RB45-10 pack
45mmEveryday rotary size
Tungsten steelStrong, precisely honed edge
Up to 8 layersOfficial cotton claim per fresh blade
What arrives: one genuine OLFA RB45-10 retail pack containing ten 45mm straight rotary blades in a protective plastic case. The cutter handle is not included.
Why keeping ten blades on hand makes practical sense
Rotary blades rarely become dull at a convenient time. A properly stored reserve means you can replace an edge as soon as performance falls away instead of forcing a tired blade through valuable fabric.
Useful for shared workrooms
A ten-pack suits studios, classrooms, sewing groups and households with several compatible 45mm cutters.
Separate blades by material
Reserve fresh edges for fabric and use marked older blades for paper or more abrasive craft materials.
OLFA's standard 45mm straight blade
Ten identical genuine blades for consistent everyday cutting
Each blade combines strong tungsten steel with OLFA's expert honing. The circular edge rolls through the work, helping fabric remain flat while you cut straight lines, broad curves and suitable layers.
Quilting and patchwork
Cut strips, blocks, borders and suitable cotton layers against an acrylic ruler.
Dressmaking and sewing
Follow long pattern edges and broad curves without lifting the fabric as ordinary scissors do.
General craft work
Cut compatible paper, film, thin rubber sheet, suitable leather and other materials with the correct cutter and mat.
Replace the edge before extra force becomes your normal technique
A fresh RB45 helps maintain a clean edge with controlled pressure.
The versatile 45mm size is a practical everyday format for fabric work.
Change the blade when you notice: skipped fibres, joined sections, repeated passes, a rough dragged edge or more hand pressure than the same material used to need.
Compatible with most 45mm rotary cutter handles
OLFA lists RB45 for most 45mm rotary cutters, including the current OLFA models below. The cutter must accept a standard 45mm round blade and every fixing component must be reinstalled in the correct order.
Confirmed OLFA compatibility
- RTY-2/C Quick-Change Rotary Cutter
- RTY-2/NS Quick-Change Rotary Cutter
- RTY-2/G Straight Handle Rotary Cutter
- RTY-2/DX Ergonomic Rotary Cutter
- Other compatible OLFA 45mm cutters
- Most suitable third-party 45mm rotary cutters
This is not the right blade for...
- 18mm, 28mm or 60mm rotary cutter handles
- Tools requiring a proprietary non-standard mounting system
- Pinking, wave or perforation cuts
- OLFA WAB45 wave-blade applications
- OLFA PIB45 pinking-blade applications
- Any cutter whose instructions specify another blade
Unsure about another brand? Check its manual or compare the existing blade specification before ordering. Diameter alone does not guarantee that every mounting system is identical.
One blade out, one blade in, nine remain protected
Change safely and keep the unused blades in their case
Replacement steps differ between slide-cover, quick-change and squeeze-handle cutters. Follow the handle's own diagram and keep every washer, nut and fixing part in its original order.
- Lock or fully cover the existing blade before loosening the assembly.
- Work on a stable surface rather than changing a blade in your palm.
- Hold blades by the centre opening or flat face, never the sharpened circumference.
- Remove only one new blade and close the case before continuing.
- Reinstall every component correctly and check blade rotation and guard operation.
- Contain the used edge securely and follow local sharps-disposal guidance.
Storage and cutting habits that protect the ten-pack
Use a self-healing mat
A suitable cutting mat protects the work surface and is gentler on the edge than glass, metal, stone or ordinary tabletops.
Keep the case closed
Leave unused blades in the supplied case and store it somewhere dry, secure and out of children's reach.
Remove hard obstacles
Pins, clips, zips and ruler edges can nick a blade. Check the full cutting path before every pass.
Layer capacity varies: OLFA states that a fresh RB45 can cut up to eight layers of cotton in suitable conditions. Practical capacity depends on fabric thickness and finish, cutter design, mat, ruler, blade condition and technique.
OLFA RB45-10 45mm Rotary Blade pack specifications
| Brand | OLFA |
|---|---|
| Article | RB45-10 |
| Direct Sewing SKU | RB4510 |
| Product type | Straight rotary cutter replacement blades |
| Blade diameter | 45mm |
| Blade material | Tungsten steel |
| Edge type | Continuous straight rotary edge |
| Purchase quantity | Ten blades |
| Storage | One protective plastic case containing all ten blades |
| Compatibility | Most compatible 45mm rotary cutters |
| Confirmed OLFA models | RTY-2/C, RTY-2/NS, RTY-2/G and RTY-2/DX |
| Official layer claim | Up to eight layers of cotton per fresh blade in suitable cutting conditions |
| Suitable materials | Fabric, paper, suitable leather, film, thin rubber sheet and other compatible materials |
| Country of manufacture | Japan |
| Included | Ten genuine OLFA RB45 45mm blades in one plastic case |
OLFA RB45-10 FAQs
How many blades will I receive?
Ten genuine OLFA RB45 45mm blades in one protective plastic case. This listing is for the RB45-10 ten-blade pack.
Are the blades individually packaged?
No. The ten blades are supplied together in one protective plastic case inside the OLFA retail packaging.
Will they fit my 45mm rotary cutter?
OLFA states that RB45 fits most 45mm rotary cutters and confirms RTY-2/C, RTY-2/NS, RTY-2/G and RTY-2/DX. Check the instructions before fitting one to another brand or an older model.
Are these straight or decorative blades?
They are standard continuous straight-cut blades. They do not create a pinked, wave or perforated edge.
What are the blades made from?
OLFA manufactures RB45 blades from tungsten steel and expertly hones each cutting edge.
Can each blade cut several fabric layers?
OLFA states up to eight layers of cotton in suitable conditions. Actual capacity varies with fabric thickness and finish, cutter design, mat, blade condition and technique.
How should I store the remaining blades?
Keep them flat inside the supplied case in a dry, secure place away from children. Remove only one blade at a time.
What is included?
Ten genuine OLFA RB45 45mm tungsten-steel straight rotary blades in one protective plastic case. The cutter handle is not included.
Stock the sewing room with ten genuine OLFA 45mm edges
Choose RB45-10 for regular quilting, dressmaking, shared workspaces and uninterrupted projects, with ten precisely honed replacement blades stored together in one protective case.
Check Cutter Compatibility