The C20410DTW is a 20mm white disc top cap with a smooth skirt and a 410 neck finish. Disc top caps are regularly used with personal care products and industrial liquids. The disc top cap design is great because a small amount of pressure will open the cap and allow for dispensing. The orifice opening is .270". Disc top caps are typically a great solution for dispensing shampoos, conditioners, gels, lotions and soaps.