Offset rack bosses for M5 bolts - Made in USA - Steel - 10 & 100-packs

10-pack - sku # M-OSRB-USA-10100-pack - sku # M-OSRB-USA-100 Made in the USA, offset M5 bolt rack bosses provide additional material on one end to ensure that whatever you attach to the boss clears the seat stay. No more spacers! Steel. Save 10% by ordering the 100-pack. Please note that our latest batch came in looking more grey than the silver that's shown in the pic. OD at widest - 9.4mm OD at narrowest - 6.4mmRadius of hourglass shape- 8mmOverall length - 14.85mm 4g (each) - These measurements are taken from representative bosses and may vary. Made in Oregon, USA