Choose from our selection of O-Ring & Repair assortments. Our storage bins and assortments are made from cold rolled steel and finished with a rust and acid resistant baked enamel, they offer superior organization for all your small parts. When combined with out inventory control software and computer generated , barcoded labels, these units make managing your product inventory easy.from our selection of O-Ring & Repair assortments. Our storage bins and assortments are made from cold rolled steel and finished with a rust and acid resistant baked enamel, they offer superior organization for all your small parts. When combined with out inventory control software and computer generated , barcoded labels, these units make managing your product inventory easy.