These 6mm long bolts are designed for single chainrings that have non-threaded standoffs. Uses a double hex head interface so you don&';t have to use a chainring nut spanner. 6mm length Made in the US out of 7075-T6 Aluminum Has hex heads on both the bolt and nut for easy installation Max torque of 7-8 Nm with light grease on threads only Perfect for use with 104 BCD Chainring SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Length 6 Material Aluminum Color Ultraviolet Purple Defined Color Purple Quantity Set/4