This comprehensive kit of tapered silicone stoppers is for a wide range of applications. From equipment to protecting during painting or coating, these plugs offer exceptional performance. Their heat-resistant and ensures they can handle demanding environments, making them a valuable addition to any toolkit. Simply select the appropriate size and insert it into the hole for a secure seal. Features -Color:Assorted Color -Material:Rubber -Size:17.20X9.70X2.20cm/6.76X3.81X0.86in -Variety of sizes: this kit includes 8 different sizes of tapered plugs, making it versatile for use with test tubes, flasks, tanks, and bottles - and heat resistant: constructed from high temp rubber and silicone rubber, these plugs are resistant to high temperatures -Leak prevention: the tight fitting design of these plugs ensures that no liquids or gases escape, maintaining the safety and integrity of your experiments -Ample supply: you have a sufficient supply of plugs to meet your long term needs, reducing the need for frequent reorders -User friendly design: the plugs are easy to insert and remove, making them convenient and efficient to use, thereby improving your experimental efficiency Package list: 1 of sealing plug (120pcs)