The Wolf Tooth Chainring Bolts were designed to be the best on the market. These single chainring optimized bolts have a 4mm hex socket on the bolt and a 6mm 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. Machined from 7075-T6 Aluminium at Wolf Tooth's HQ in Minneapolis, USA, these 1x chainring bolts and nuts are beautifully crafted to top-tier standards. If you're looking to adorn your bike with precision engineered components down to even the finest details, these are an ideal choice. Wolf Tooth Chainring Bolts Compatibility  Any of our bolt-on Drop-Stop® chainrings with through holes 110 BCD and 130 BCD Works with other brands single chainrings as well Related Products Wolf Tooth Drop-Stop chainrings GCX and GC cassette expanders Wolf Tooth Chainring Bolts Specifications Weight: 4 bolts - 10 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