Contec Polypropylene Flat Mop Wringer The Contec Polypropylene Flat Mop Wringer provides an efficient mopping solution. Specifically, it is designed for use with VertiKlean MAX and QuickTask Mops. This wringer fits 6.5-gallon (25L) buckets. Consequently, it helps operators achieve optimal mop saturation and dryness. The wringer is colored Blue. Click here to browse other Contec Cleanroom essentials.