Hardware Resources Self-Drilling Zinc Die Cast Hollow Wall Anchor. Installs Into 3/8" - 5/8" Sheetrock. Accepts #6 - #8 ScrewDesigned to quickly drill into any 3 8" 5 8" thick drywall using a standard #2 Phillips or square bit Sharp self drilling tip and aggressive threads quickly an easily penetrate the wall and the head sits flush on the exterior Anchor accepts a #6 #8 body Specifications: ADA Friendly No Packaging Type Box of 500 Drive Type Phillips Square Combo Head Size #2 Sold By Bag of 500 Brand Hardware Resources Finish Zinc Overall Length 5 8" Material Steel