Sets Bicycle Rear Derailleur Pulley 10T Guide Roller Black

Size - Pulley Teeth: 10T; Axle Hole Diameter: 6mm / 0.24" (Supplied with 4mm / 0.16" and 5mm / 0.2" reducer sleeves); Outer Diameter: 39mm / 1.54"; Color: Black. Contents: 2 guide pulleys + 2 reducer sleeves 4mm/5mm.
Material - The bicycle derailleur pulley is made of aluminum alloy using CNC machining, ensuring maximum strength and durability while remaining lightweight and easy to carry. The durable anodized finish provides excellent corrosion resistance and prevents rust, ensuring long-term durability.
Features - The rear derailleur adopts a smooth-bearing design, robust and resistant to deformation, with low friction, high transmission efficiency, smooth gear shifting, and improved pedaling efficiency. The alternating tooth design allows for tighter meshing, reduces lateral movement, shortens shift response time, and improves shifting performance. Application - The guide pulleys are equipped with speed-flexible reducing sleeves and are compatible with center-bolt drivetrains. Suitable for mountain bikes, road bikes, folding bikes, track bikes, BMX bikes, downhill bikes, etc. Note - Do not overtighten the screws securing the pulley to the derailleur during installation, as this will increase friction with the rear derailleur and reduce the performance of the bicycle pulley.