Soft-touch silicone caps seal your glass pieces for a mess-free cleaning experience Tightly seals your piece and prevents spills while using cleaning solution Universally adaptable to most glass sizes for a snug fit Suitable for use on glass, metal, ceramics, and more SIZE & SET DETAILS Each cap is 0.5? thick and comes in 1-1/2?, 1-7/8?, and 2-3/4? diameters. Compact, flexible, and easy to store when not in use. Includes three different sizes to fit a variety of glass pieces.