8Pcs Female Knob Screws, M8 x 49mm Black Star Knob Clamp Nut for Machinery Exhaust Valves Package included: 4 pcs x

Package included: 4 pcs x ABS Plastic Rods

4pcs x Welded O Ring

Made from sturdy material that ensures long lasting durability

Screws Size: 2

protect glass objects

8Pcs Female Knob Screws, M8 x 49mm Black Star Knob Clamp Nut for Machinery Exhaust Valves Package included: 4 pcs xDescription: 1. Material: These knurled nuts have plastic handles, which are strong, corrosion resistant, and not easy to break. 2. Effect: Smooth surface without burrs, will not hurt your palm when grasping. The inner thread is clear and the force is even. 3. Easy Installation: Screw on type design for easy installation and with a surface nice finish for comfortable grip. 4. Application: Widely used for lathe machines, mechanical equipment,