Box One Chain Tensioners are extruded then CNC-machined from 7075 aluminum for an optimal balance of strength and weightA minimalist design adds style while reducing their overall massLaser-etched graphics that include wheel position guides and two 10mm mounting holes with 15mm of adjustment to ensure perfect adjustability10mm7075ALBlack
Box One Chain Tensioners are extruded then CNC-machined from 7075 aluminum for an optimal balance of strength and weightA minimalist design adds style while reducing their overall massLaser-etched graphics that include wheel position guides and two 10mm mounting holes with 15mm of adjustment to ensure perfect adjustability10mm7075ALBlue
Box One Chain Tensioners are extruded then CNC-machined from 7075 aluminum for an optimal balance of strength and weightA minimalist design adds style while reducing their overall massLaser-etched graphics that include wheel position guides and two 10mm mounting holes with 15mm of adjustment to ensure perfect adjustability10mm7075ALRed
Box One Chain Tensioners are extruded then CNC-machined from 7075 aluminum for an optimal balance of strength and weightA minimalist design adds style while reducing their overall massLaser-etched graphics that include wheel position guides and two 10mm mounting holes with 15mm of adjustment to ensure perfect adjustability10mm7075ALSilver
Genuine SE Bikes chain tensionersImproved design and functionEasily adjusts to take up chain slack3/8`AlloyPurple
Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combinationSold in pairs for 3/8` or 14mm axles in various offset sizesSturdy and dependable 6061-T6 alloy construction14mm x 1.5-2mm6061-T6Black
Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combinationSold in pairs for 3/8` or 14mm axles in various offset sizesSturdy and dependable 6061-T6 alloy construction14mm x 2.5-3mm6061-T6Black
Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combinationSold in pairs for 3/8` or 14mm axles in various offset sizesSturdy and dependable 6061-T6 alloy construction14mm x 3.5-4mm6061-T6Black
Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combinationSold in pairs for 3/8` or 14mm axles in various offset sizesSturdy and dependable 6061-T6 alloy construction14mm x 4.5-5mm6061-T6Black
Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combinationSold in pairs for 3/8` or 14mm axles in various offset sizesSturdy and dependable 6061-T6 alloy construction14mm x 5.5-6mm6061-T6Black
Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combinationSold in pairs for 3/8` or 14mm axles in various offset sizesSturdy and dependable 6061-T6 alloy construction14mm x 6.5-7mm6061-T6Black
Solid, non-adjustable chain tensioners compatible with any frame, chain and chainring combinationSold in pairs for 3/8` or 14mm axles in various offset sizesSturdy and dependable 6061-T6 alloy construction14mm x 7.5-8mm6061-T6Black