Size SMALL dia. for small tools.Compact 12” length uses a breaker bar or ratchet for up to 4 feet of length Versatile ratcheting angles of leverage and IT ALL FITS IN YOUR TOOL BOX 1/2" inner diameter Great for smaller tools with a maximum 1/2" O.D. Slot accommodates most open end wrenches No more long awkward cheater pipes, double wrenching or makeshift wrench extenders! UP TO 4 FEET OF NUT BUSTING POWER Size SMALL dia. for small tools. Check out the size large Big Bertha Breacher for standard and large size tools Professional Cr-V Steel - - Guaranteed For Life -- Patented Size SMALL dia. for small tools. Compact 12” length uses a breaker bar or ratchet for up to 4 feet of length 1/2" inner diameter Versatile ratcheting angles of leverage and IT ALL FITS IN YOUR TOOL BOX No more long awkward cheater bars, double wrenching or makeshift wrench extenders/extensions! Nut/Bolt Remover Torque Wrench Multiplier, Also works as a lug nut wrench/tire iron with impact sockets Slot accommodates most open end wrenches UP TO 4 FEET OF NUT BUSTING POWER ~Check out our 2 & 4 piece sets of Big Bertha Breachers! See our other listing for 2 & 4 piece sets Professional Cr-V Steel ~GUARANTEED FOR LIFE ~Patented