Choosing rotary cutting tools & mats can mean choosing between a broader workspace setup and a blade-focused purchase. The Threadart Rotary Cutting Set names a mat, ruler, and ergonomic cutter; OLFA focuses on a 10-pack of 45mm blades. The right pick depends on whether you are building out your cutting surface and measuring tools or stocking replacement blades.
Quick verdict
Threadart is the clearer direction for someone who wants the broader format at $12.99, with rotary mat, ruler, and ergonomic cutter language in the title. OLFA is the focused choice at $46.45 for a 10-pack of blades. The listed prices are $33.46 apart, so the purchase format matters more than the shared 45mm diameter.
At a glance
| Option | Listed price | Format emphasis | Useful detail |
|---|---|---|---|
| Threadart Rotary Cutting Set | $12.99 | Rotary mat, ruler, ergonomic 45mm cutter | Safety button and left- or right-hand use |
| OLFA 45mm Rotary Cutter Blades | $46.45 | 10-pack of 45mm circular blades | Specified for fabric, paper, thin rubber sheets, and film |
Where each option wins
- Threadart wins for a mixed-tool setup. Its title brings together a rotary mat, ruler, and ergonomic cutter, while the safety button, fold-away blade, and left- or right-hand design add useful handling details.
- OLFA wins for blade replenishment. The 10-pack format is more directly suited to someone seeking multiple replacement blades, and its stated uses include fabric, paper, thin rubber sheets, and film.
- Neither wins on diameter alone. Both products specify 45mm, so that shared number does not establish a performance advantage for either one.
Product notes
Threadart Rotary Cutting Set

For a shopper assembling a broader quilting workspace, Threadart is the clearer fit because its title combines a rotary mat, ruler, and ergonomic 45mm rotary cutter instead of focusing on blades alone. The safety button, fold-away blade, and left- or right-hand design add concrete handling details, while the double-sided gray-and-pink cutting mat is a useful named element. The limitation is the bundle wording: it also says "Select Cutter or Cutter Blade Refill," so the $12.99 choice is not as straightforward for someone expecting every named tool in one package. Choose Threadart when the appeal is the mixed tool format and ergonomic handle; skip it when your priority is specifically a multi-blade refill pack.
OLFA 45mm Rotary Cutter Blades

OLFA is the focused choice for someone who wants a blade pack rather than a mat-and-ruler setup. The title specifies 10 blades, and the product is described for fabric, paper, thin rubber sheets, and film; alloy steel is the stated blade material. That makes the format easy to match to a blade-replacement task, without turning the shared 45mm diameter into a performance claim. The limitation is scope: the title centers on blades in standard packaging, so it is not the more natural pick for a shopper seeking the rotary mat, ruler, and ergonomic cutter named by Threadart. Pick OLFA when quantity is the deciding detail; choose Threadart when your project needs more than replacement blades.
Final choice by use case
- Starting a rotary cutting tools & mats setup: Choose Threadart because its title names a mat, ruler, and ergonomic cutter, along with handling features such as the safety button and reversible hand use.
- Replacing blades in an existing cutter: Choose OLFA because its title specifies a 10-pack of rotary cutter blades and its stated applications cover several craft materials.
- Want a blade-focused purchase: OLFA is the more direct match for the 10-pack format.
- Want broader tool coverage: Threadart is the better fit for the title's combination of mat, ruler, and cutter.
The tie-breaker is simple: Threadart is framed around several cutting tools, while OLFA is framed around a 10-blade pack. Since 45mm appears in both, choose based on the format your quilting workspace needs.