Features 1、After heat treatment and cold drawing hardening, the strength is higher, and it has a certain degree of flexibility and plasticity. 2、With mature technology, stable and reliable, the concentric accuracy of the inner and outer cones is 0.015mm. 3、Widely used in milling, drilling, tapping, engraving, CNC, spindle machine, clamping tool, etc. 4、This spring chuck has a bright appearance and exquisite workmanship of chamfering. 5、The engraving machine spring collet is well‑made and has a high clamping force. Specification Item Type: Spring Chuck Material: Spring steel Accuracy: 0.015mm Model: ER32 Height: Approx. 40mm / 1.6in Clamping Range: Approx. 20mm / 0.8in Package List 1 x Spring Collet