The Schley Products Extension Protectors Essential Kit, No. 15900, consists of two 1/2” square drive male and female hammers designed to connect to any length 1/2” drive extension to protect the extension ends should it be otherwise used as a hammer drift. The extension protectors are precision machined from heat-treated alloy steel and allow the use of a normal socket extension as a drift without causing damage. The hammer set is versatile, works with ordinary 1/2” drive tools, and the hammer heads are designed for a variety of uses.