We designed these bolts to be the best on the market. These are 6mm long so they work perfectly with any botl on single chainring that does not have threaded standoffs. Compatibility: - Any of our bolt-on Drop-Stop chairnings with through holes - Works with other brands single chainrings as well Tech Specs: Weight: 4 bolts - 8 grams Material: 7075-T6 Aluminum Size: M8 x.75 x 5 Torque Spec: 7-8 NM tightening torque with light grease on threads only Made in the USA