All-purpose use chain tensioner to mount on the derailleur hanger. Convert any vertical dropout frame with derailleur hanger to a single speed bike.Spring loaded arm keeps tension on chain and this chain retention hoop prevents chain derailment.Pulley axle ist adjustable to optimize chainline.Material: alloyColor: black
CYCLUS TOOLS CHAIN LINK COUNTER.When the time has come to change the old chain, you need to determine the number of chain links for the new chain. The length of the worn bicycle chain will be considerably extended during its lifetime, so new and old chain of the same length will have a different number of chain links. It is not sufficient to just measure the length of the chain, much better is to replace with exactly the same number of chain links. compatible with bicycle chain width from BMX (single speed) up to 12-speed incl. paintstick to mark the chain linkhow it works:1. put the chain link counter on the chain and set zero2. mark chain link next to the counter3. rotate the chain one full round, ending with the marked chain link on the same spot4. read the number of chain links5. use chain link counter to measure the new chain(new chain with the same number of links will be shorter than the old worn one)
Compatible with most bicycle chains on the market, from BMX, general-purpose vehicles, electric assist vehicles, to sports vehicles such as Shimano HG/IG/UG, Sram, and Campagnolo 12S.Adopting a movable guide part, it is possible to work without changing tool settings for each type of chain.*Some parts cannot be used due to the shape of the chain.
Main car model・Sports vehicles such as Shimano, Sram, Campagnolo (exterior multistage 6-12S)・BMX・Single speed vehicle・General vehicle・Electric assist vehicleCompatible chain size1/2 x 1/8,1/2 x 3/32,1/2 x 3/16weight280g■ C-371-1 (replacement arrow) x 1, with crimping attachment