Triple Square Spline Bit Socket Set XZN, Tamper Proof,1/2" 3/8" 1/4" Drive,M4 - M18,S2 Steel,10 Pieces

PRECISE TORQUE POWER: Each bit is manufactured for that perfect sizing. The chamfered ends provide a smooth insertion into fasteners and protect the bits and fastener from any damage. Combined with the chrome vanadium steel sockets, you have excellent torque power that is dependable.  EASY STORAGE: Each set includes a sturdy blow molded case for convenient storage when not in use. They are embossed with the appropriate sizes so you can easily identify which socket you need. DURABILITY: Bits made of premium S2 alloy steel for superior hardness that reduce wear-outs and ensure longevity; Treated and coated to prevent corrosion; 4-point (square) drive; Recommended for use with hand tools only ACCURACY: Precisely and automatically machined bit tips to ensure accurate size, chamfered bit ends insert smoothly into fasteners and protect both bits and fasteners from damaged edges. SIZES: 10-Piece XZN triple square spline bit socket set includes: 1/4" Drive: 4mm, 5mm, 6mm; 3/8" Drive: 8mm, 9mm, 10mm, 12mm, 14mm (tamper proof); 1/2" Drive: 16mm (tamper proof), 18mm (tamper proof).