*NOTE: 6004LDFNSS and 10005LDFNSS include 1 extension handle. **NOTE: 6004LDFESS and 10005LDFESS include 1 extension handle, indicating light and buzzer.***NOTE: 20005LDFESS is a “T” style wrench with 1" drive female head that can be used with a torque multiplier. Includes 5 piece handle assembly, indicating light and buzzer.Snap-on Industrial Brands offers factory torque training at their manufacturing facility in the City of the Industry, California.