TA With Tension-Compression & Quick-Change Spindle APPLICATION For CNC Machining And Turning Centers Or Conventional Lathes And Mills. FEATURES & ADVANTAGES Tension/Compression Compensation: Provides greater thread accuracy and higher production rates. Hard Start: For accurate depth control. Front Release: If tension is accidentally over extended, adapter is released. Prevents damage to tap or workpiece. Short Length: For limited space. Tap Holding: Accepts Quick Change Tap Adapters