Features 1、CNC toolholder, suitable for clamping milling cutters, drills, reamers and other cutting tools. 2、Using high‑quality 20CrMnTi material, high wear resistance, more stable performance. 3、The clamping force is super strong, not loose, not deformed, durable and long‑lasting. 4、Use carburizing and quenching process, the surface hardness is high, can withstand a certain impact and load. 5、It is widely used in CNC machining, with superb craftsmanship and easy installation. Specification Item Type: CNC Toolholder Material: 20CrMnTi Model: BT30-ER32-100 Purpose: CNC Machining Toolholder Working Length: Approx. 100mm / 3.94in Nut Diameter: Approx. 50mm / 1.97in Spindle Taper: 7/24 Revolving Speed: 25000-30000RPM Body Accuracy: 0.002-0.005mm Coaxiality: <0.005mm Overall Clamping Accuracy: 0.002-0.005mm Hardness: 52-58HRC Package List 1 x Toolholder