SeaSucker 4.5 In. SeaSucker SeaSucker's vacuum mount delivers a strong and versatile solution for temporary mounting needs. Perfect for DIY projects across boats, homes, RVs, and more, it enables secure attachment to rigid, non-porous surfaces without the need to drill holes. Users have the flexibility to bolt items through the slotted holes after removing the housing, or screw directly into the 1/4-20 threaded stainless steel insert, offering a practical approach to a variety of applications. Features: Slotted holes in the top (for bolting whatever it is youre mounting on there) plus a 1/4-20 threaded stainless insert Rated to pull up to 120 pounds All metal parts are high-grade stainless steel (even the springs inside our pump) 4.75 diameter when attached Protective cover included