Environmentally Friendly: All tapered plugs are made of high quality eco-friendly silicone, durable and flexible. They will not shrink or break. The heat resistant tape is made of PET film and high temperature silicone adhesive with excellent resistance to heat and solvents. Flexible Design: The tapered design of the plug allows it to adapt to a wide range of hole sizes. The tips are flexible, so the most common sizes of bolts, studs, etc. can be mounted, for any hole with or without threads. Easy to fix and reliable protection against paints, chemicals and liquids. Practical Function: Their high elasticity and heat resistance make them the ideal solution for clogged pipes and fittings. Whether you are transporting liquids, chemicals or paints, our plugs provide effective sealing. Quality, ease of use, versatility and tightness are our strengths. Application: Our tapered plugs provide perfect protection against paint and liquid penetration during powder coating, painting and oiling. They are ideal for a wide range of applications in the construction, electronics and automotive industries to prevent paint and powder penetration, as well as water and gas leaks. Package Included: These tapered plugs are available in pink, black, red, yellow and blue. 8 different sizes, 100 pieces in total, packed in a transparent plastic box for easy use. Widely used in construction, electronics, automotive, machine shops, laboratories, etc.