400pcs combination drill set Item No. SM8100400 - 400pcs combination drill set -21pc titanium coated HSS drill ... .5, H3, H4, H5, H6, H7 7pc inch hex: 5/64", 3/32", 1/8", 5/32", 3/16", 1/4 ... - 1pc gauge- 1pc 150mm flexible driver shaft- 1pc extension holder Item No. SMD8100400 -400pc combination drill set