The Jak-Hammer SST 1-1/4" cut features a pre-aligned stainless Smart Tip. The Smart Tip is heat-treated to 42RC and crafted from 416 stainless steel. The edges of the trocar Smart Tip are factory aligned with the rise of the three stainless steel blades. The three blades are held forward in flight and are retained by an o-ring. .036" blades deploy on impact to a cutting diameter of 1-1/4". Package of 3.