Squire SS Tensioner Lightweight sprung type chain tensioner. Replaces conventional derailleur gear mech. Variable tension and position (can be used on suspension frames with varying chain length - or rigid frames.) Superlight CNC alloy body, pivot bolt and sealed pulley. Supplied with 2 springs to provide "pull up" or "push down" function. Superlight CNC alloy body. Sealed bearing CNC alloy pulley.
