4 Pcs Replacement Suction Cups for Cat Window Perch, Extra Thick Heavy Duty PVC Sucker Pads with Nuts, 3.3" Powerful Vacuum Hooks for Cat Hammock, Window Bed, Shelf, Max Load Support - Clear

["[Upgraded Extra Thick Design] Featuring an enhanced thickened PVC wall, these 3.3-inch suction cups offer superior structural integrity. The reinforced material prevents deformation over time, ensuring a tighter vacuum seal and significantly longer service life than standard thin versions.","[Industrial-Grade Suction Power] Engineered for maximum grip, our heavy-duty suckers provide an rock-solid hold on smooth glass or ceramic tiles. Each cup is designed to distribute weight evenly, offering a high-load capacity that keeps your cat’s window perch stable and wobble-free.","[Secure Threaded Nut Fastening] Equipped with a sturdy threaded screw and plastic nut, these replacement cups allow you to bolt your cat hammock or shelf directly to the suction base. This mechanical locking system ensures the bed stays level and secure, even during active jumping. [Versatile Heavy-Duty Utility] While optimized for cat window beds and perches, the extra-thick design makes these suckers ideal for hanging heavy sunshades, bird feeders, or balcony shelves. A reliable DIY solution for any smooth, non-porous surface.","[Tool-Free & Damage-Free Setup] No drills or adhesives required. Simply clean the surface, press firmly, and tighten the nut to create a powerful vacuum. The premium clear PVC leaves no residue or scratches, making it perfect for renters and homeowners alike.","[Versatile Heavy-Duty Utility] While optimized for cat window beds and perches, the extra-thick design makes these suckers ideal for hanging heavy sunshades, bird feeders, or balcony shelves. A reliable DIY solution for any smooth, non-porous surface."]