Description:Feature: Professional woodworking drill bit

Durable: Square Bits, made of carbon steel material,durable

Usage: for drilling square holes in WoodConvenient: The square hole tools needs to use electric drill, hammer and other tools

Application: for construction, installation, renovation etc

Size Chart:1cm/0

39inch1

27cm/0

50inchPackage Includes:1 Square BitsNote:Please allow slightly errors due to manual measurement and different monitors