Rich in Size: The drill and chisel set includes 6 Y-type drill bits and three chisels; The drill bits consist of 2 pieces measuring 4-11/32 inches in length, and 4 pieces measuring 3/16, 1/4, and 6-5/16 inches in length with sizes of 1/4, 5/16, 3/8, 1/2 inches; Additionally, the chisels include 3 types with lengths approximately 5-1/2 inches, comprising 2 different styles of flat chisels and 1 pointed chisel; With its diverse sizes, it can meet most of your various needs