White Christmas Hook is a Christmas light hanger designed to fit gutters with mesh gutter guard. Will NOT fit perforated gutter guard !! White Christmas Hook is made from vinyl coated aluminum, will not rust & lasts for years. The hook just slides down into the holes of your gutter guard & using your fingers, you just crimp the hook to hold your Christmas light wire. It's just that EASY !! Our colored hooks are approximately 1/8th of an inch in diameter. To make sure the hooks will work in your gutter guard, take a 1/8th of an inch drill bit & place it down into your gutter guard. If it fits, then our Colored Christmas Hook will work for you !! If your holes are too small try our plain 25 or 50 ct Christmas Hook that fits BOTH mesh & perforated gutter guard. To figure how many hooks you need, you should space these about every 18 inches apart. Measure your footage of gutters & divide by 1.5 & round up to the nearest 25 or 50 & this is how many hooks you will need. We offer our hooks in 50 ct & other colors as well.... White, Brown & Black to match your gutter color. We have sold thousands & thousands of these & have many happy customers who can now hang their Christmas lights. Thank you for your order of Christmas Hook's !! 50 Ct White Christmas Hook-Christmas Light Hanger For Gutters With Mesh Leaf Gutter Guard