We designed these bolts to be the best on the market. They have a 4 mm hex socket and are 10 mm long so you can use a bash ring with your chainring that has threaded standoffs like our 104 BCD 30t ring, elliptical 104 BCD rings, 76 BCD rings and others. No nuts are included with these bolts as they are intended for use with threaded chainrings.Compatibility:- Any of our bolt-on Drop-Stop® chainrings with threaded standoffs:- 104 BCD x 30T in aluminum or stainless steel - 10mm long bolts required for use with the 104 BCD bash ring and this ring.- 104 BCD elliptical- 10mm long bolts required for use with the 104 BCD bash ring and this ring.- 96 BCD symmetrical (not XTR)- 10mm long bolts required for use with the 96 BCD bash ring and this ring.- 76 BCD when used with Specialized Stout crankset- Any other brands chainrings that have M8 x .75 threaded standoffsSpecifications:- Weight: 4 bolts - 5 grams- Material: 7075-T6 aluminum- Torque spec: 7-8 NM tightening torque with light grease on threads only