HEAVY-DUTY CONSTRUCTION FORLONGER LIFE. HANDLE MARKED FOR EASY IDENTIFICATION OF SCREWDRIVER SIZE, TYPE AND LENGTH. PRECISION-MACHINED TIPS FOR ACCURATE FASTENER CONTACT. STRONG, DURABLE BLACK PHOSPHATE TIPS PREVENT CHIPPING OF PLATING. HIGH-GRADE, RUST RESISTANT, CHROME-PLATED FINISH. SOFT, CUSHIONED GRIP FOR EXTRA COMFORT AND TORQUE. EXCEEDS ASME/ANSI SPECIFICATIONS. NOTE: THIS IS NOT AN INSULATED TOOL.