... It is economic, convenient, waterproof, oil-proof, dustproof, antibacterial and non-toxic. Also the plastic caps are used to cover ... machines, tools or instrumentsto protect them from dust, oil, chemicals and water.Composition: HDPE, LDPE, PVC or PE (polyethylene) ... clip shape, convenient for use in bathrooms and needing much less room for transportation and storage.Packaging: 100 pieces per poly bag, ...