CZT for different types of uses to provide a wide variety of supporting rollers, the main pressure roller, roller eccentric wheel or joystick. Wheel to indicate the load capacity of the basic load rating C and Co, so the load bearing capacity of no less than the other The outer cover , generally for the low carbon steel of ST14 (special occasion can adopt the stainless steel ); Keep the shelf usually strengthening nylon; The needle is a bearing steel to roll , produce according to the needs of customer too