-shaped silicone stopper is ideal for those looking for a reliable and sealing . Its rubber and silicone materials provide excellent resistance to wear and tear, while its buckle design ensures a secure fit. Ideal for use in kitchens, bathrooms, and laboratories, this stopper is a must-have for any sealing task. Features -Color:Black -Material:Rubber -Size:1.35X0.95X0.95cm/0.53X0.37X0.37in -sturdy silicone material: these plugs are crafted from silicone, offering durability and environmental benefits -Multifunctional design: ideal for sealing cover Holes reverse waterproofing, and more, making them highly versatile -Userfriendly installation: the plugandbuckle design allows for , saving -Generous quantity: ensuring you have enough for various needs and applications -Reliable waterproof seal: effectively prevents water, dust, and other substances from entering sealed cover Holes ensuring a secure seal Package list: 30pcs x Stoppers ( (A=4mm,A=5.5mm,A=7.5mm,A=8.5mm,A=9mm,A=9.5mm) ,each 5pcs)