The body of the product is composed by chain plate (fine quality steel chrome) support plate  (extrusion aluminum alloy) axel pin (alloy steel) and so on, don't yield relatively movement and deformation between cable, rubber hose and towline,  the chain plate is processed by chrome, with new shape, reasonable structure, high dexterity, high rigidity, convenient installation, reliable using, easy dismounting, especially that the product uses high intensity hard wearing material, the copper alloy is axle pin, to increase the hard bearing intensity of the product, with more flexible bent, lower resistance and low noise, so to guarantee non-deformation and non-sagging by long time using. The beautiful shape of the product strengthens the whole art effect of the machine equipment, and strengthens the competition of machine tools and machinery equipment of our country at international market.