Compatible for
79cc 80cc 196cc 212cc 2.5hp 6.5hp Coleman CT200U CT200U-EX BT200X
Baja Warrior Heat Massimo Hensim MB165 MB200
Falcon 200
TrailMaster MB200-1
Motovox MBX10 MBX11
Monster Moto Mega Moto MM-B80 MM-B105 Mini Bike,
CRF50F CRF70F CRF80F CRF100F XR50R XR70R XR75 XR80R XR80 XR100 C70 CT70 XL75 XL100S XL80S NS50F Z50R Pit Dirt Bike

Size:
Bolt Diameter（Axle hole）: 15 mm/0.59 inch

Package Including:
6 × chain adjuster, 6 × 420 chain master links

It's made of metal, which is not easy to break, strong and durable You should often check the chain, the chain mustn't be too loosen or too tight, the chain tensioner will help you