5Pcs/set Bike Chainring Bolts Single/Double/Triple Speed Chainwheel Screw Original MTB Mountain Bike Parts Aluminum Alloy Crank Arm Screw Bolts

Name: Super light 7075 chain screw Color: black, red, blue, green, purple, gold, silver, pink Size: nut length 6.5mm, screw length 9.5mm Weight: 1.5g each Product material description: Zinc is the main alloying element in 7075. Adding magnesium to the alloy containing 3%-7.5% zinc can form MgZn2 with significant strengthening effect, making the alloy's heat treatment effect far better than aluminum-zinc binary alloy . Increasing the content of zinc and magnesium in the alloy will further improve the tensile strength, but its resistance to stress corrosion and spalling corrosion will decrease. After heat treatment, it can reach very high strength characteristics.Note: It is recommended to measure the length of your own screws before buying, and then check whether the information is consistent.Size: please allow 1-2cm differs due to manual measurement, thanks.Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures, but not the same performance on different bodies as on the model. Thank you!