Promax C-1 Chain Tensioner - 2-hole Fits 3/8"/10mm Axles Blue

Promax C-1 chain tensioners are extruded then CNC-machined from 6061-T6 aluminum for optimal strength and low weight. Two mounting holes ensure adjustability on most frames. When used properly they will protect your frame dropouts and help hold your rear wheel in place. Sold as a pair.CNC-machined 6061-T6 aluminumFor use with 3/8" and 10mm axlesTwo axle hole designSold as a pair