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 various surfaces. 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. 2. Versatile Application: With a threaded stud G1/4, 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. 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 surfaces, this suction cup provides the strength and you need for your projects., Manufacturer: Duanthry