Park Tool Tap And Bit Driver TH-3Low profile driver for both hex drive bits and small frame taps Good for jobs in tight places which would impede standard tap handles or hex wrenches. Ideal for restrictive areas such as water bottle cages and rack mounts Dual sided. One side accommodates most square shank frame taps up to M6, including the Park Tool TAP 7, TAP 8, and TAP 9, and features a set screw for solid fixturing during use. The other side accepts standard 1 4 inch hex drive