Used to attach residential 3x4 downspout (3x4 leader) to an exterior wall. Sturdy .027 guage aluminum.(4 pack) Aluminum alloy material, longer life than plastic products, more . The material is more environmentally friendly, in order to reduce plastic products and contribute to the global environment. Connect Gutter Downspout and give a pair of expansion screws as a gift. Easy to use, Just punch a hole in the fixed position, let the expansion screw insert first, and then fix downspout straps with screws. Color: White Material: aluminium alloy Package Contents: 1 x set gutter downspout extensions(Accessories as shown in the figure-screw color random.don't accept the specified color.) 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.