The Vito string conveyor is available with a variety of standard widths of 420, 520, 620, 720, 820 and 1.020 mm. The drive roller and non-driven roller diameter are both …. mm. The centre distance of the V-strings can be variable, but depends on the product to be transported. Minimum conveyor length is 1.000 mm, maximum length is 12.000 mm.