The Saris Bones Knob is the OEM replacement knob for the Saris Bones 2 and the Bones 3 bike racks.
Worked perfectly. Much less expensive than the local bike stores. Thank you.
Perfect replacement, my Bones is like new! got a couple extra just in case I need them in the future. the set from ACK was cheaper than the Saris site, and shipping was super fast.