Bicycle Rear Derailleur Pulley Aluminium Alloy Bicycle Guide Roller Pulley 11T Ceramic Bearing Jockey Wheel Pulley with Bearing for Mountain Road MTB Bike - nafeng, NF0001

• 【Sturdy Material】Bicycle rear derailleur pulley is composed of high quality aluminium alloy and ceramic, with high strength and wear resistance, good performance, ceramic material can reduce resistance and long service life. 【Fine Workmanship】The bike derailleur pulley is CNC milled, finely polished and anodised to form a high strength alternative. The fine workmanship ensures the proper functioning of the bike pulley. 【Easy to Use】Each bike derailleur comes with 2 reducer sleeves for your use. The installation shaft diameter is compatible with the range of 4, 5 and 6mm. Please check the product specifications carefully before purchasing to ensure you get a correct replacement part. 【Outstanding Performance】The bicycle rear derailleur uses ceramic bearings, which not only lubricate and wear well, but also reduce drag and improve transmission efficiency without any strange noises, resulting in a more effortless ride. 【Applicable Range】Equipped with 11 teeth, supporting 8/9/10/11 speeds. It can fit most mountain bikes and is an essential accessory for your bike to replace old or damaged parts.