4 Waterproof Bike Bottom Bracket Crank Bolt Parts

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Description:

Material: Made of good quality aluminum alloy material, anti rust, high strength, sturdy and durable, colorfast, lightweight .
Functional: fix the crank and crank of the sprocket .
Washer: Use double washer, 21-23mm inner diameter cranksets .
Wonderful Accessory: for bike chain wheel, fix the crankset and crank of the chain wheel, Tighten, seal, and waterproof.
install: crank arm is wonderful replacement part for your broken or old ones .
Universal: Can be applied for mountain bikes, road bikes, etc .

Specification:

Material: Aluminum Alloy

Size: 1.8cm/0.71inch

Package Includes:(4 Pack)

1 Bikes Crankset Screw

Bike Crankset Screw;Bike Crankset Screw Mountain Hollow Crank;Aluminum Alloy Crankset Crank Fixing Bolt Replace; Crank Arm Fixing Bolts Chainwheel Screws;Waterproof Bike Bottom Bracket Crank Bolt Parts; Road Accessories Components Gear