Carbide is the edge of choice for turners because it stays sharp maintaining its cutting edge up to 20 longer than HSS! This carbide insert fits many of the woodturning tools on the market today. Insert is supplied with an alloy #8-32 x 3/8″ flat cap screw. Orders of 3 or more come with a replacement 3/32″ allen wrench. Fits: Easy Wood Tools (Any tool using Ci0 insert cutter) and many others!