Bike-It Rim Locks - Size - 1.85

The Bike-It Rim Locks prevent tyre slippage on the inner rim when you are running your tubes at lower pressures.1.6 - fits most 21'' tyres1.85 - fits most 125 rear wheels2.15 - fits most 200/250> rear wheelsThe Bike-It Rim Locks are rubber coated to protect the inner tube, and bolt hole may need to be drilled through rim for fitting.