Profile: Lark Descaling Tools is a supplier of pneumatic tube cleaning equipment. Our product range includes air motor for straight tubes & curved tubes. In our air motor for straight tubes, our cleaners are used with a combination of solid connectors, universal couplings, in conjunction with drill heads, expanding wire brushes, and boring tools. In our air motor for curved tubes, a combination of drill head and universal coupling is most widely used for initial tube cleaning, where extremely hard deposits are met drill heads are high manganese castings, and will stand up to very arduous conditions.