Product Name: ER Collet SetsModel Number: ER8/11/16/25/32/40-P0.015/0.008 Product Parameters:1. Brand name: WAT2. Place of origin: Guangdong of China3. Raw material: 65Mn, 40Cr, Elastic steel4. Type: Collet set, Clamping collet, ER collet set5. Hardness: HRC44-486. Precision/Accuracy: