Widetop：Widetop > W1 > Widetop > Chisel-edge angle of the twist drill bits Chisel-edge angle of the twist drill bits WIDETOP • 2019-06-28 Chisel-edge angle of the twist drill bitsThe angle between the chisel edge and cutting lip, as viewed from the end of a twist drill bits. Previous : Chisel edge of the twist drill bits Next : Cobalt steel, used for making twist drill bits