Box One 3/8" BMX Chain Tensioners - Pair - Black 4" CNC machined AL6061 top cover

CNC machined AL6061 top cover is sealed to keep moisture and grit away from the bearings

multi-panel stitched canvas top

adds abrasion protection without sacrificing casing suppleness

8mm) and 1/8" teeth

It features forged and CNC machined steel cups with a star nut and alloy top cap

Box One 3/8" BMX Chain Tensioners - Pair - Black 4" CNC machined AL6061 top coverBox One Chain Tensioners are extruded then CNC machined from 7075 aluminum for an optimal balance of strength and weight. A minimalist design adds style while reducing their overall mass, including laser etched graphics with wheel position guides and two 10mm mounting holes with 15mm of adjustment to ensure perfect adjustability. Fits most frames every time you remove and replace your wheel. Axle: 3 8" (10mm) Material: Aluminum Hardware: Stainless