Precision Quilting Tools manufactures the highest quality products used for Quilting, Sewing, and Arts & Crafts. The 45mm crochet edges skip blades are made of SKS-7 Carbide Tool Steel so the blades will stay sharper and last longer. Fits all 45mm Rotary Cutters. Rotary Skip Blades work great on fleece and flannel! Perfect for Quilters, Sewing, Scrapbooking, Card Making, and other DIY Projects! LONG LASTING – Made from high-quality Japanese SKS-7 Carbide Tools Steel for blades that stay sharper and last longer! Pre-lubricated to Prevent Rusting and Corroding. FITS ALL CUTTERS – Compatible with almost all 45mm rotary cutters including Olfa, Fiskars, Truecut, Dafa, Clover, and Martelli. SHARP – The quality of the blades is just as sharp as those expensive name brands! STORAGE CASE INCLUDED – Store your blades in the included FREE snap case. 100% MANUFACTURER MONEY BACK GUARANTEE – If you’re ever unsatisfied with the product we will refund your order. We have a no-hassle return policy. Precision Quilting Tools is a USA Company with U.S. Based Customer Support! Great Gift for Christmas.