Made of aluminum alloy, heavy duty and not easy to rust or break, with strong grip the cable will not off easily. Firmly fix the heating cable and heating tape without creating holes on the roof, help them to reduce the influence of ice dam on the roof. Clip size: 1.8Inch L, spacer size: 1.8Inch L, suitable for installing of heating cables on the pitched roof shingle of , asphalt, etc. Easy to install without tools, clips may be to be bent to the right size. Use 1 spacers at each top corner point and 2 clips at each bottom corner point. 38 clips + 32 spacers in the package, enough replacing quantity to support system. Colour:Silver Material:Metal Package Contents: 32 * Spacers 38 * clips Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.