BOX TWO CHAIN TENSIONER 10MM 3/8"

Box Two™ Chain Tensioners let you dial in your chain tension, so it's just right. Two mounting holes provide room for ample adjustment on most frames. When used correctly, Box Two™ Chain Tensioners help protect frame dropouts and keep your rear wheels locked in place where they should be. FEATURES New and Improved 30mm of Adjustment Dual Axle Position Anti-Rust Hardware Anodized Finish SPECIFICATIONS Axle Size 10mm (3/8") only Material 6061-T6 Aluminum Hardware Stainless Steel