Made of aluminum, it is and wear-resistant, suitable for long-term outdoor work, and melting point welding technology ensures sturdiness and durability. The package contains 25 heating cable roof clamps and 25 spacers, enough quantity to meet your . Secure heating and heating tape securely to avoid drilling holes in the roof and reduce the impact of ice dams on the roof. The Heating Cable Roof Clamp Set is a great helper in your life with its compact size, both heating cable roof clamp/spacer lengths are 4.5 cm/1.77 inches. These wire clips install easily without tools, the clips can be bent to fit, and you can use 1 washer in each top corner and 2 clips in each bottom corner. Colour:Silver Material:aluminum Size:About 4.5cm Package Contents: 25 * Cable Spacers 25 * 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.