Internal Pipe Wrench, Compatible Pipe Size 1/2 in, Drive Size 1/2 in, Non-Sparking No, Body Material Alloy Steel, Features Eliminates Damage to Threads, Walls, External Nickel or Chrome Finish, Exclusive In.Cam Action In. Provides Nonslip Grip on the Inside of Nipples, Pipes & Fittings and can be Turned Either Way, Tool Length 3 1/4 in, Tool Weight 0.35 lb