Product description
Specifications UPF20-B11,UPF20-B12,UPF20-B13,UPF20-B14,UPF20-B17,UPF20-B19,UPF20-B20
The optional driving wheel:Type A for punched belt wheel,type B for timing belt wheel
1-3 layer driving wheel available. The optional tensioner:spring tensioner,magnetic tensioner.