It converts a standard 1/2 body ISO 16028 coupler to 3/8 body ISO 16028 style coupler. These are NOT light duty couplers. The sturdy design of heavy duty TopLine couplers have become well known for their durability and ability to withstand rugged conditions. Flat Face couplers are designed for applications where hydraulic spillage is a concern. One of the great advantages to the Flush Face design is that the couplers are easy to keep clean which helps to prevent contaminants from entering the hydraulic system during connection and disconnection. Features: Convert 1/2 body to 3/8 body ISO 16028 Heavy Duty design. Push-connect locking sleeve design Corrosion-resistant zinc plating Heavy knurled sleeves for non-slip grip Includes dust caps to protect from the elements Flat Face coupler design minimizes hydraulic fluid loss Specifications: Model number: TL144 Coupler Body Size: 1/2 to 3/8 Coupler Material Type: Steel Coupler Plating Type: Corrosion-resistant trivalent zinc