CS Unitec 2-Series professional grade Tungsten Carbide-Tipped Hole-Saws are designed for the most demanding cutting applications. 2-series carbide teeth and precison ground flutes allow for fast, clean hole cutting on a wide range of materials from steel, stainless steel, Iron and more. A spring loaded pilot pin allows for easy slug ejection and coolant delivery. While the collar flange prevents over-drilling. Effective cutting depth 5/8". Available in cutting diameters from 9/16" to 1-3/8". Included components: 1x 2 Series TCT Hole-Saw, 1x spring mounted pilot pin