Belt caterpillar is specially designed for constant pulling of cable without creating any strain on the cable. Independent gripping roller system is able to adjust the irregularities of the cable. Range is available in pneumatic pressure, cable pulling by pneumatic cylinders, controlled with solenoid valves to ensure light pressure on cable due to pulling operation. Three speed transmission controls slow, fast lines, speed and stop wire by passing due to pulling operation on bigger diameter cables. Caterpillars are equipped with a set of horizontal and vertical guide rollers at entry and exit.