1. Superior Suction Power: This 3Inch concave vacuum cup is specially designed with a heavy-duty hand pump, providing exceptional suction power for secure and reliable attachment to surfaces. 2. Versatile Application: With a threaded stud G3/8, this suction cup can be easily attached to a wide range of objects, making it ideal for use in industries such as glass handling, woodworking, and automotive repair. 3. Construction: Crafted from high-quality materials, this vacuum cup is built to withstand heavy-duty usage. Its sturdy design ensures long-lasting durability, even in demanding work environments. 4. Convenient and Easy to Use: Featuring a concave shape, this suction cup offers easy installation and removal. Simply the cup onto the desired and use the hand pump to create a strong vacuum seal. 5. Professional Grade Performance: Trusted by professionals, this vacuum cup delivers superior performance and reliability. Whether you're lifting heavy objects or working on delicate