Material: Aluminum 7075, full CNC process. Aluminum 7075 is high strength and super lightweight. Weight around 1.2grams each.
Size: Length is for single chainring. Outer diameter of female bolts is 10mm. The thread diameter is 8mm. Fit for all kind of MTB and road bike chainrings.
Surface treatment: Aluminum bolts are anodized colors that can match your chainring color. Colors include Black,Blue,Red,Grey,Golden.
2pcs Wrench Inside: package including 5pcs bolts, 1pc 5mm hex wrench and 1pc backside hold wrench in package. Easy for your install.
Recommended installation torque:8Nm for Aluminum bolts.The bolts thread will broken if install torque over strong.