... our main markets,OEM available from us.Core Drill1. Weldon shank, with more stable clamping for stable cutting and finish of ... holes.2. Additional one hole on the shank of cutters ≤Φ40mm, fit arbors with 19.05 bore as ... such as steel structure project, railway traffic, bridging, shipbuilding, machine manufacture, aviation and spaceflight. drilling machine for Cutting tools HSS core drill