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Bubblebee's The Lav Concealer Regular Spares Set contains six full sets of metalwork replacements for your regular square format Lav Concealers. A set of metalwork consists of one big metal Fabric Guard, one small metal Fabric Guard and a metal Lock piece. The Spares Set has three silver sets (for white Lav Concealers) and three black sets (for Black Lav Concealers), making six sets in total.