We designed these bolts to be the best on the market. These single chainring optimized bolts have a 4 mm hex socket on the bolt and a 6 mm hex socket on the nut so no spanner is needed. These are 6 mm long so they work perfectly with any bolt on single chainring that does not have threaded standoffs.

Specifications
Any of our bolt-on Drop-Stop® chainrings with through holes
110 BCD and 130 BCD
Works with other brands single chainrings as well
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

Mfr Claimed Weight
4 bolts - 10 grams