Both professionals and hobbiest, rejoice! The Excel Blades’ Excel Blades 13 pt Snap-Off Replacement Blades – 100 pack is set to become your next favorite tool! This 100 pack of precision blades feature 13 segments which can be broken off exposing a new sharp tip,features a 45 degree angle,and is used to make pull cuts to open boxes, trim dried caulk or paint, and slice through soft materials.The item # 22633 is made of carbon steel. This products works in conjunction with Excel Blades’ 9mm snap knives: K10, K14, K70, & K73.It comes with 100 per pack.