Specification: Material: aluminum alloy Color: Black BCD: GXP Arm length: 170mm Fit for: SRAM XX1 XO1 X1 GX XO X9 etc. Weight: approximately 700g (crank arm) Graphite crucible mini gold furnace metal melting torch: 1 crank (left and right arm) 3 * bolts 1 * lower support Description: 1. Made of premium aluminum alloy, which is lightweight, does not add weighing to the bicycle. 2. High strength and resistance to deformation, durable for a prolonged use. 3. Standard precision machining, which guarantees the maximum chain retention, increases Lifespan and reduces friction and noise. 4. 170mm crank arm length with chain ring bolt. 5. An ideal replacement for bicycle repair, compatible with many
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