Description 2Pcs Aluminum Alloy Bike Bicycle Cranket Crank Arm Fixing Bolt Chainwheel Screws for Road Bike Mountain Bike BMX MTB Features- Size: About 2. 80X1. 90X1. 40cm/. 1. 10X0. 75X0. 55inch.- Material: Aluminum alloy.- This bike crank bolts is lightweight, easy to install and use. Fit bikes with hollow shaft.- Distribute the pressure of the nut over the part being secured, reducing the chance of damage to the part.- The mountain bike crank bolt with some different colors for you to chose, to meet different needs. Bright colors decoration.- Wonderful accessory for bike chain- wheel. used to fix the crank set and crank of the chain wheel, which is a great accessory for cycling enthusiasts.- You can send this crank screw as a gift to who love mountain riding. Package Including 2 x Crank cover screws