<p>8mm Hex Crank Arm Fixing Bolt and Cap replace the old bolts for your crank. Uses an 8mm hex wrench.</p> <p>Please note: If your crank arm is ovalized and keeps falling off. Replacing the bolt with keep the crank arm attached for a while but will eventually fall off. If this happens you will need a new crank arm. When the square taper is ovalized from wear, it will back out the bolt</p> <p> Includes a pair 8mm Hex Head Crank Arm Bolts </p> <p> Please note if your crank arm bolt is stripping, it is usually due to the bottom bracket axle threading and not the crank, in that case, you will need a new bottom bracket axle</p>