BBB Bicycle Derailleur Pulley Rollerboy BDP

Product model number: ‎BDP-11
Color: ‎Black
Size: ‎Number of teeth 10T
Material: ‎Ceramic, fiberglass
>Batteries included or built-in: ‎No
Capacity: ‎1 unknown modifier
Product size: ‎39.93 x 13.89 x 2.6 cm; 18.14 g