Power Tools Gears and Carbon Brush: 1. Suitable for 9523 angle grinder 2. ... , and matched spare parts: armatures, stators, aluminium casting, gears and carbon brush.Gears and Carbon Brush for 9523 angle grinder:1. 100 ... the same hardness: armature shaft, gear, spindle. 9523 Angle Grinder Gears and Carbon