... No. SM8100400 - 400pcs combination drill set -21pc titanium coated HSS drill bits: 1.0, 1.5, 2.0, 2.5, 3.0, 3.2 ... drill bits with hex: 1.0x2, 1.5x2, 2.0x2, 2.5x2, 3.0x2, 3.2, 3.5x2, 4.0x2, 4.5x2, 4 ... , 5x50mmx8- 12pc flat wood bits: 13, 16, 19, 22, 25, 32mm, 1/2", 5/8", 3/4", 7/8",1", 1-1 ... gauge- 1pc 150mm flexible driver shaft- 1pc extension holder Item No. SMD8100400 -400pc combination drill set