Zinsser CSP25L Cover Stain(r) is supplied in the following: Container type: Tin. Volume: 2.5 litre. Zinsser's Cover Stain(r) is an interior / exterior primer, sealer, stain sealer and bond coat that dries for recoat in only two hours. On interior surfaces, Cover Stain(r) dries quickly and has great hiding power, providing outstanding stain killing and enamel undercoating performance. Stains of all kinds are permanently sealed so topcoats are blemish free. Cover Stain(r) is especially effective on nicotine and water stains. New wood trim can be primed, sanded and top coated the same day, saving time and money. On exterior surfaces, Cover Stain(r) has a unique formulation that delivers full penetration and flexibility on all surfaces, especially dimensionally unstable wood.