4" Diameter SUCTION CUP PICK UP TOOL Power Grip An awesome tool for the shop or garage. The 4-1/2" dia heavy-duty rubber suction cup grabs sheet metal, glass, or any flat, smooth surface. Perfect for pulling out dents in metal or playing Suction Man on a skyscraper. The Power Grip Vacuum Cup has a quick-release handle and a high-impact nylon body in neon red.