Klein Tools NRHDA4 Adapter for NRHD4, 12-Inch Male Square with Black Phosphate Finish for Corrosion Resistance

7/16-Inch hex quick-release adapter for Cat. No. NRHD4 | 1/2-Inch male square, works with a 7/16-Inch impact driver | Lock pin secures socket | Black phosphate for corrosion resistance | Overall length: 2-15/32-Inch (6.3 cm) | Adapter sold individually and included with the 4-in-1 Impact Socket (NRHD4)