SMD Crown Drill, replaceable drill tip structure. Design: 1. Adopts a unique joint surface with radial interlocking, making the drill tip installation firm and reliable; 2. High-precision hole diameter, up to grade 8-9 precision, stable and reliable machining of threaded bottom holes; 3. High-strength drill shank, suitable for hole machining under different working conditions, high tool safety; 4. Contributes to reducing costs and simplifying tool management; 5. More multiple-diameter models available for deep hole machining. Specification range: diameter 12-30mm, 1.5 / 3 / 5 / 8 / 12 times diameter, five series in total.
