uxcell 5pcs 1/4" Hex Shank 1/2" Square Socket Bit Adapter Drill Nut Driver Product Name : Drill Socket Adapter;Tip Type : Square Head Square Tip Size : 12.5mm / 1/2";Hex Shank Size(Approx) : 6.3mm / 1/4" Overall Length(Approx) : 73mm / 2.8";Color : Silver Tone Material : HSS;Total Weight : 222g Package Content : 5 Pcs x Drill Socket Adapter