The item is a lighting guard cap. Its supporting rod thimble are very thick and solid. Round head is smooth, stick with curtain firmly, support the curtain if it collapses but not hurt it. It can be used to prevent an outdoor supporting rod from conducting electricity. Features - Color: Random color. - Material: Plastic. - Size: About 6.80X5.00X5.00cm/2.67X1.97X1.97inch. - Prevent outdoor support rod from conducting electricity. - Hold down the screen to prevent it from falling off the thimble. - Jack up the curtain to prevent collapse and prolong the service life of the sky screen. - Help in case of rain: tent pole, hold the tarpaulin in rainy days, remove rain quickly, and do not tear the tent. - Tent tarpaulin Grab: specially designed to grab tarpaulin and prevent tarpaulin from pulling out; easy to remove. Package list: 8 x Tent Proof Caps Z