Model number KT-836 / Voltage 220v / Power 2800w / Speed : 0~1400rpm Advantage: 1,Remote control 2,flexible shaft protection,flexible shaft protection function, soft shaft stuck in the tube, Automatic stop of flexible shaft 3,High power motor, can be used with flexible shaft with different diameters, tube diameter range 50-800mm 5,flexible shaft with steel sheath. High temperature resistance, abrasion resistance, strong hardness, can bend. 6,Drive shaft is 65 manganese steel spring material, strong torsion, spiral design can be arbitrarily bent. 7,Running in both directions 8,double suction, more fast 9,Swept and sucked at the same time, less than 800mm direct pipe effect is better .