Conical plugs made from environmentally friendly silicone, robust, will not crack, harden or break, reusable. Performance: High temperature resistance up to 200-300, resistance, good sealing performance, good insulation. Applications: Widely used in chemical, machinery, electric power, manufacturing, food, coal mining and other industries. Suitable for masking holes in powder coating, painting, anodic oxidation, electrophoresis, electroplating, phosphating and other processes to prevent paint and chemical liquids from entering. Well Packed: 120 silicone plugs in total, including 8 different sizes from 1/16inch to 5/8inch, in five colours. The product is packaged in a plastic box for easy use and storage. Material: Silica gel colour: As Shown Package Contents: 120 x Rubber Plugs(5pcs red 20x17mm, 5pcs blue 17x13mm, 5pcs blue 14x9.5mm, 15pcs blue 12x8.7mm, 15pcs yellow 9.5x6.5mm, 15pcs red 8.7x4.7mm, 30pcs black 6.5x3mm, 30pcs rose red 4.7x1.6mm) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.