Saw Tooth Forstner bits are made from high grade Carbon Steel and meticulously heat-treated. They cut fast, with the grain or across it. Multi-spur peripheral tool with centre tip. They can drill overlapping holes in any direction and are chosen for exacting and delicate work, such as scroll and scalloping operations. Forged steel for increased resistance to wear, with large chip free zones for excellent chip clearance. Shanks ground to reduce vibration and improve the quality of the cut. Not for use with routers. A fast feed rate is recommended. Specifications • Shank Diameter: 1/4 • Dia Metric: 9.5 • Dia Imperial: 3/8 • Cut Length Metric: 57.15 • Overall Length Metric: 88.9 • Overall Length Imperial: 3 1/2