Rim Lock 1.85″ Rim Type, Heavy Duty Metal Base Covered with Strong Rubber.

Rim Lock / Bead Lock fits to 1.85″ rims (for most tire sizes 325-350). Are you popping tubes quickly? A rim lock, or “bead lock” may be exactly what you need. A rim lock secures the tire, to reduce the chance of tire slippage on the rim, ultimately protecting the inner tube. Eliminates tube pinching and casing damage!