Square Hole Waterproof Screw Bottom Bracket Screw Bike M8 Screw Hexagon Bottom Nuts Crank Arm Bolts

Label:Yes Weight: about 15G Suitable: Square hole tooth pattern axis Package include:2*screws Specifications: M8 * 15MM Name: bicycle shaft hex screws Material: 45 steel

Features:

1. the surface is resistant to falling glue, than non-drop-resistant screws more easily locked.

2. to waterproof, anti-mud, anti-dust into the shaft inside and improve the service life of the shaft.

3. installation and removal of 8MM hex tool.