Anvil Customs Motorcycle Jockey Shift Knob Sometimes Anvil needs to switch things up and do something different.....well here are some really cool, really clean Shift Knobs for your motorcycle jockey shift or even your hotrod / ratrod.  Machined from 2.25" Aluminum round stock About 3" tall Channelled sides, tapers to a point  3/8" mount hole with fine threads For your motorcycle jockey shift or even your hotrod Machined from 2.25" Aluminum round stock About 3" tall Channelled sides, tapers to a point. 3/8" mount hole with fine threads.