Thermo-Pro Rubber

Grip ring stem casters come in various different sizes are are designed to fit up into a mounting hole or socket to securely attached the caster to the mounting unit. The grip ring is a brass ring on the stem that compresses as it pressed up into the mounting hole. It is squeezed and then expands against the tubing walls which creates the force that keeps the casters from falling out.

Thermoplastic Rubber Wheels are a soft tread wheel that is manufactured out of a chemically bonded rubber on a polyolefin core. They provide a quiet and smooth roll because of their shock absorbing and cushioned ride features.