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 This close quarters copper tubing cutter has a unique rotating cutting head that allows users to cut installed copper piping with as little as 1 1 2 in 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