144pc Number 6/0 Crocodile Jeweler's Sawblades. 76 teeth/inch. Teeth are uniformed, angled, and straight. Approximately 0.007 thick,0.012 inch tall and 5 inches long. Made of the finest steel, by the leading manufacturer. Crocodiles are round backed with precisely milled teeth for accuracy and ease of cutting. Combined with with perfect temper, Crocodile blades will perform up to your most demanding requirements. Made in Switzerland. These are similar to X-ACTO X746, which have been discontinued by X-ACTO.