Alaaner Cassette Freewheel Sprocket 10 Speed 11 42T Mountain Race Bike Replacement Part AccessoryFeatures:Made of high quality material, high strength, anti-rust, non-deformation, wear-resistant and durable.Hollow out design reduces much weight to lessen the burden of long time cycling, also easy for cleaning.It can promise smooth rotation of chain..

Alaaner Strg BMX Pf30 Conversion Kit 1255 Pf30 24Mm Press Fit Bottom Bracket Mountain Bike Bearing Part AccessorySpec:Features:1. Made of high quality materials, solid and durable.2. Quality set of bottom bracket, suitable for PF 30mm.3. Characterized by high strength and high hardness, not easy to deform.4. Lightweight and small size, easy to inst..