The 1/4 inch Universal Quik-Lok Extension has an innovative design that fits all 1/4 inch shanks with or without a power groove. The unique design requires no tools to change out bits, making it fast and efficient. Universal Quik-Lok accepts all 1/4 in. shanksTool less quick change no Hex key neededHardened shank for maximum durabilityEfficient with faster drillingCleaner hole cuttingOptimized for wood drillingIdeal for cabinet installation, fixture installment, and general driving needsExtends reach for tight spaces