November 11, 2015 – Greenlee’s XT Cobalt Step bits, engineered using high speed steel with a cobalt additive, are designed specifically for drilling through stainless steel in commercial, industrial and residential applications.

 
They come in 1/2-in., 7/8-in. and 1-1/8-in. sizes. These bits also feature a new split point tip that eliminates walking and penetrates 10GA stainless steel in under 10 seconds, according to Greenlee.
 
Like all other Greenlee step bits, the XT Cobalt Step bits feature a dual-flute design and a steam oxide finish.  These bits can also cut through mild steel, copper, brass, aluminum, fiberglass, plastic, wood and laminates.