Allows For The Chain To Shortened By A Half Link
1/8 is the standard size for bmx bike
3/32 is narrow sprockets more used in single speed race bikes / bmx bikes
Smaller items will be shipped Royal Mail Tracked Shipped same day if before 3.:00PM and in Stock
Larger Items will be sent DPD for Next day if ordered before 2:00 PM and are fully in stock at time.
For more info on shipping see bottom of the page.