OLRWSLG 10Pcs Suction Cup 40mm Window Suckers Glass Pads Plastic Sucker Extra Strong Adhesive Holder with Knurled Nut for Outdoor, Kitchen, Bathroom, Window, Mirror

【Standard M4 Thread: Universal Fit with Knurled Nuts】Engineered with standard M4 threads (10 mm screw length) and a 40 mm suction base. Each glass suction cup comes complete with an easy-to-grip knurled nut for effortless hand-tightening—no tools required. Perfect for securing acrylic signs, bathroom caddies, glass tabletop pads, and DIY crafting mounts. 【Vacuum Screw Adsorption: High Bearing Capacity & Secure Hold】Featuring an upgraded vacuum screw-tightening mechanism and curved suction pad. By tightening the transparent knurled nut, air is fully expelled to create a powerful vacuum seal with exceptional load-bearing capacity. Safely holds heavier items on smooth surfaces for long periods without slipping or falling off. 【Premium PVC & Stainless Steel: Anti-Rust & Non-Yellowing】The window suction hooks is Crafted from high-grade, flexible PVC plastic combined with rustproof stainless steel threaded studs. Designed to withstand humid environments like showers and kitchens without rusting, oxidizing, or turning yellow over prolonged use. 【Damage-Free & Residue-Free: Multi-Surface Smooth Application】Attaches firmly to non-porous smooth surfaces including glass windows, polished tiles, marble, mirrors, and acrylic panels. Installs without drilling, nails, or sticky adhesives, leaving zero marks, sticky residue, or wall damage upon removal. 【Reusable & Easy Installation: Restorable Suction Power】Simple to install in seconds—wipe the surface, press the cup flat, and tighten the nut. 100% reusable and washable. Pro Tip: If suction cups deform during transit, simply soak them in warm water (60–70°C) for 2 minutes to restore their original shape and maximum grip.