IRWIN Extractor 25PC Set Multi Spline Hex Key Sets which provides a consistent and which provides a consistent and safe temperature each time you use it 85 lb Power Source Battery Motor Type Brushless Battery Size 18 volt Number of Tools Included 1 Maximum Amperage (amps) 0 socket screws and fittings for high torque applications GRIPPING POWER: Aggressive left hand spiral design for extra gripping power EASY OUT STYLE: Spiral flutes embed themselves to increase grip as resistance increases ETCHED SIZES: Extractor size and recommended drill bit size are etched on each tool 5 PIECE SET: Hex head multi spline extractors from 1 8 7 8 in in heavy duty carrying case VERSATILE: Remove broken studs