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Suitable for: GSB 20-2; GSB 20-2 RCE; GSB 20-2 RE; GSB 20-2 RET; GSB 21-2 RE Professional; PSB 850; PSB 1000; PSB 1200 Auto-Lock; GSB 24-2; GBS 21-2 RCT Clamping range: 1.5-13.0 mm Intake, range: 1/2 inch - 20 Compatible with Bosch and Bosch Professional impact drills Accessories quality from Bosch Made in Germany › See more product details; Product description It is compatible with Bosch impact drills. The keyless chuck is a Bosch system drill chuck with a capacity of 1.5 to 13 mm diameter. It clamps drill bits with minimal effort and requires no key. It is compatible with Bosch impact drills.; Product description It is compatible with Bosch impact drills. The keyless chuck is a Bosch system drill chuck with a capacity of 1.5 to 13 mm diameter. It clamps drill bits with minimal effort and requires no key. It is compatible with Bosch impact drills.; It is compatible with Bosch impact drills. The keyless chuck is a Bosch system drill chuck with a capacity of 1.5 to 13 mm diameter. It clamps drill bits with minimal effort and requires no key. It is compatible with Bosch impact drills.