Features:Size information: the outer side of black rubber saving box plug measures approx. 42mm/1.65 inch in diameter, the inner diameter is 33mm/1.3 inch, fits most of the saving box and other kinds of boxesWhat you can get: package comes with 20 pieces piggy bank closure plugs, the rubber plug can keep the thing in box without slipping, the stopper on the box outside are suitable for liquids or solids containersDurable material: these piggy bank plug covers are made of rubber material, durable and reusable, and can be long time using, it touches smooth with comfortable tactility, can ensure you to use repeatedlyApplicable occasion: black rubber stopper cover can help you solve problems of piggy bank without lid, can also be applied to protecting or covering holes and to protecting boxes from sharp corners or edgesWarm notice: choking hazard and small parts, please stay away from children under 3