Genuine Bosch 1617014146 Carbon Brush Set for compatible Bosch rotary hammers and drills including GBH 2-20 D, PBH 3000 FRE and GBM 13-2 RE models. These replacement carbon brushes transfer electrical current to the motor armature, helping maintain reliable motor performance and smooth operation. Suitable for replacing worn carbon brushes where the machine has developed reduced power, intermittent operation or excessive sparking. Manufactured to the correct Bosch specifications for precise fit and reliable performance.