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+1 (217) 579-8045Description•1/2" Round Shank•Carbide Tipped Easy drilling through embedded rebar and surrounding concrete.Use in any 1/2" capacity or larger drill motor with a three jaw chuck and no load speed of 440 rpm.ApplicationDrill first with a hammer drill bit until reaching rebar. Replace bit with CM79 then penetrate rebar. After completion of rebar drilling, complete drilling with hammer bit .