1. Material: steel 2. Application: mountain/road bike, etc. 3. Purpose: repair common full-concealed, press-in semi-concealed and external bearing bowl sets 4. Features: laser engraved bearing parameters, inner and outer 45 degree chamfer, anti-rust and abrasion resistance, flexible rotation, wide applicability 5. Specification: 41/41.8/47/49/52mm 6. Weight: about 25g for 41mm, about 26g for 41.8mm, about 33g for 47/49mm, and about 35g for 52mm
