Chain tugs are designed to fit 20", 24" or 26" wheeled bikes with horizontal dropouts and 10mm rear hub axles.
The Gusset Kojak are the strongest we sell but the Trialtechs are a little lighter. Both do a great job of tensioning your chain and are really easy to use: simply loosen your axle nuts/bolts, gently increase tension on the chain by turning the nut on the back of the tensioner clockwise, then nip the axle nuts/bolts back up again.
Please note that chain tugs may not be compatible with some dropouts, especially those which are quite heavily scooped away.
TartyBikes Ltd, Units 3-4, Club Street, Bamber Bridge, Preston, PR5 6FN