Our leather cord is 2mm and may be knotted, double looped or cut-to-order. Knotted, the leather cord is 42" long and adjustable from 16" to 38". The double loop and cut-to-order options require a clasp (KF-21) sold separately. The double loop option is available in lengths 16", 18", 19" and 20". The cut-to-order is available in lengths of 16" to 41".