Milton S-216 1/4" NPT Milton HIGHFLOWPRO V-Style Coupler and Plug Kit This V-Style high flow coupler and plug combination air fitting kit includes: (1) Steel 1/4" MNPT Plug (Milton #760-1) (1) Brass 1/4" FNPT Coupler (Milton #764) Milton's V-Style high flow couplers and plugs are ideal for high volume, low pressure applications. These couplers will also accept M-Style and A-Style plugs. However, V-Style plugs are recommended to retain maximum flow. With their push-type sleeve release: Simply push plug into coupler to engage; Pull the sleeve release back to remove. Maximum inlet working pressure of 300 PSI. 1/4" basic flow size. Air flow of up to 74 SCFM. Milton Industries offers V-Style High Flow Plugs in either Brass or Steel options: - Milton # S-760: V-Style 1/4" MNPT Brass Plug - Milton # S-762: V-Style 3/8” MNPT Brass Plug - Milton # S-761: V-Style 1/4” FNPT Brass Plug - Milton # S-763: V-Style 3/8” FNPT Brass Plug - Milton # S-760-1: V-Style 1/4" MNPT Steel Plug - Milton # S-762-1: V-Style 3/8" MNPT Steel Plug - Milton # S-761-1: V-Style 1/4" FNPT Steel Plug - Milton # S-763-1: V-Style 3/8" FNPT Steel Plug We highly recommend steel plugs for use with any type of percussion tool (such as: impact tools, air grinders, polishers, drills, etc.). The use of brass plugs with these tools with cause damage and premature wear to the couplers and plugs.