? The In Line Series of Filters, Regulators and Lubricators is an economical way to operate, protect and maintain your air tools. These devices are supplied with female inlet and male outlet threads for easy installation into the tool. This series is designed for applications where standard controls can t be used. ? Aluminum body ? Available with or without a 1?1/2 dial gauge (0?160 PSI) ? Helps fine-tune air tool performance when supply air pressure is set at correct level