The Bosch 2608570083 is a high-precision 1/8 inch (3.175mm) collet and locking nut assembly designed for industrial die grinders. It ensures a secure, concentric grip on rotary bits, burrs, and felt points for vibration-free metalworking and finishing. Detailed Assessment: Micro Defects: None found. All 10 units are in factory-new condition. The internal collet leaves are sharp and free of compression marks. The black oxide finish on the nuts is 100% intact with no wrench slippage marks. Usage Markers: No tool indentations or witness marks found. Bosch 2608570083, 1/8 Collet Lot, Die Grinder Nut, GGS 27L Parts, 10pc Collet Set, 2 608 570 083, Industrial Grinder Chuck, Rotary Tool Collet, 1/8 Inch Pinca, Bosch Grinder Repair, Surplus Industrial Parts, Metalworking Tooling, Replacement Colle.