This hydra drill head features Ti-Phon coating, right-hand cutting, and solid carbide construction. It offers high productivity across a wide range or materials including harder steels. It consistently provides high performance, even after numerous head changes. This listing is for each. Technical Specification Item Hydra Drill Head Style Coolant Application Metalworking Workpiece Material Carbide Insert Size 33mm Cutting Direction Right Hand No. of Edges 0 Coating Ti-Phon For Use With 38GF23, 38GF71, 38GF96 Workpiece Compatibility Cast Iron (K), Hardened (H), Steel (P) Insert Material Carbide Steel (P) Compatibility Yes Stainless (M) Compatibility No Cast Iron (K) Compatibility Yes Non Ferrous (N) Compatibility No Super Alloy (S) Compatibility No Hardened (H) Compatibility Yes Compliance and Restrictions WARNING Cancer and Reproductive Harm -