Die adapters work on round and hex shaped dies; Ratcheting T-handles wind dies with a 5° swing arc and have a reversing lever to eliminate hand-over-hand turning; Twist Lock guide system reduces the “walk back" of the die guide and keeps the dies centered while cutting; Die adapters work with the 3/8" drive Pass-Thru™ ratchet and socket system as well as socket accessories; Auto-locking feature allow the tap adapters to be removed safely; Drive extension adapters provide greater access in confined areas when used with 3/8" drive extensions; Ratcheting T-wrench works with GEARWRENCH Pass-Thru™ socket system; Blow mold carrying case with tilted tap holders for easy access and storage; Set includes 2 ratcheting T-handles, 3 sizes of tap adapters and 2 sizes of die adapter, 2 extension adapters and a sliding T for the adapters, a 4mm hex key, 5 screw extractors, SAE and Metric thread gauges, and 48 taps and dies in SAE and Metric sizes ranging from 4-40 to 3/4" and 3mm to 18mm; Meets or exceeds ANSI, ASME, DIN, and Federal specifications