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The Box Five cranks are a 3 piece alloy sqaure taper design
with reinforcement on index and thumb and a synthetic leather pull-tab
The match hub guard is made from tough nylon with a 6061-T6 aluminum core for strength and is designed to slide over the existing cone for easy installation
Lastly aluminium ferrules prevent housing failure at both ends and can be easily refitted after any cable trimming
625" spindle is the standard BMX size
Fly Magneto Female Rear Cassette Hub - RHD Size:CrMo Axle/9t/RHD The Box Five cranks areFly's Magneto Cassette hub features a magnetic system engage using the force of two magnets that allows the ratchet ring to engage. The magnetic field provides an even repelling force which makes the ratchet to work completely straight and are created in a way that reduces friction compared to the use of springs. The Neomidium magnets Fly use maintain the magnetic field pretty much forever, as well. These properties creates the fastest, most reliable
