Attachable Gear 21T 1/2 X 1/8 Inch Ball

Description

Esjot Sprocket 1/2 x 1/8 Spherical ball 21 Tooth – Number of teeth: 21 – Colour: silver – Chain size: 1/2″ x 1/8″ – Inner diameter: 35 mm – Spherical sprocket – Material: steel – Weight: 81 grams – Thickness: 3 mm – Type of bike: city bikes