Features:_x000D_ 1. Made of high quality aluminum alloy with coating, high strength, anti-rust, colorfast, lightweight, durable._x000D_ 2. Fine design with precise machining, fits crank perfectly and offers professional fixation of crank._x000D_ 3. 5 pairs of screws and nuts a pack, good quality with reasonable price, you will like it._x000D_ 4. It is used to fix the the crankset and crank of the chain wheel._x000D_ 5. Great accessory for cycling enthusiasts._x000D_ _x000D_ Specification:_x000D_ Condition: Brand and High Quality_x000D_ Material: 7075 Aluminum Alloy _x000D_ Optional Color: Black, Red, Gold, Blue, Green, Titanium Color_x000D_ Quantity: 5 Bolts & 5 Nuts_x000D_ Size: Approx. 8 x 4mm / 0.31 x 0.16inch_x000D_ Weight: Approx. 9g / 0.3oz_x000D_ _x000D_ Packing List:_x000D_ 5 x Pair of Bolts & Nuts 1Made of high quality aluminum alloy with coating, high strength, anti-rust, colorfast, lightweight, durable. 2Fine design with precise machining, fits crank perfectly and offers professional fixation of crank. 35 pairs of screws and nuts a pack, good quality with reasonable price, you will like it. 4It is used to fix the the crankset and crank of the chain wheel. 5Great accessory for cycling enthusiasts.