this page sell aluminum bolts and steel bolts, have model for single chainring and for double chainring.so totally 2 different size and 2 difference materials.
Aluminum bolts features:
Material: Aluminum 7075, full CNC process. Aluminum 7075 is high strength and super lightweight. Each aluminum bolts weight 1.6grams.
Size: 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 anodized. Offer multi colors for choose.
2pcs Wrench Inside: 5pcs bolts in package, 1pcs 5mm hex wrench and 1pcs backside hold wrench in package. Easy for your install.
Aluminum bolts max install torque is 8Nm. The bolts thread will broken if install torque over strong.
Steel bolts features:
Material: steel and high strength. weight 4grams each one.
Size: Outer diameter of female bolts is 10mm. The thread diameter is 8mm. Fit for all kind of MTB and road bike chainrings.
Surface treatment: Cr coating for anti rust and anti corrosion.
2pcs Wrench Inside: 5pcs bolts in package, 1pcs 5mm hex wrench and 1pcs backside hold wrench in package. Easy for your install.
