1.Not quite sure about the size of your downspout holes No need to worry, Those 6 packs wide-3.3 inches, tall- 6.1 inches. suitable for resisting most blockages.2.EASY TO USE: No extra tools required, easy to adjustable, you can tighten the gutter guard as much as you need. You just need to easily push them into the right place.3.NO MORE CLOGGING: Save yourself the hassle of constantly unclogging your gutter; protect your wallet from pricey repairs. With a pack of 6 rain gutter screens in every set, youll be able to keep leaves, dirt, and debris out of your downspout pipes the simple and effective way.4.DURABLE MATERIAL: We adopt non-corrosive, waterproof and weather-resistant aluminum. This gutter guard strainer is more heavy-duty. Durable enough to stay firmly in place and dont bother you to re-install it.Colour: silverMaterial: aluminumSize: 12x8.0cmPackage Contents:12 x Filter capOnly the above package content, other products are not included.Note: Light shooting 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.