The SeaSucker Vacuum Mount is the perfect temporary yet durable mounting solution. If you need to attach something to a rigid, non-porous surface without drilling any holes, SeaSucker is the best way to do it. This vacuum mount can support any DIY project for your boat, home, RV, and more. To make it easier for you to turn the vacuum mount into your solution, holes are slotted in the top for bolting whatever it is you're mounting. Plus there's a 1/4-20 threaded stainless insert for screwing directly into. This SeaSucker also has a stainless steel D-ring for holding ropes, straps, and more.• Rated to pull up to 120 lbs.• All metal parts are high-grade stainless steel• 4.75" dia. when attached• Protective cover included Vacuum mount is rated to pull up to 120 lbs. Designed with slotted holes in the top & a 1/4-20 threaded stainless insert Stainless steel D-ring for holding ropes, straps, & more | SeaSucker 4.5" Vacuum Mount with Stainless Steel Pointed D-Ring in Black