Dixon U-Series Universal Pneumatic Male Coupler SKU Body Size Threads Material Length OD Hex Inch 2UM2-B 1/4 1/4-18 NPT Brass 2.44 0.92 3/4 2UM3-B 1/4 3/8-18 NPT Brass 2.44 0.92 3/4 3UM3-B 3/8 3/8-18 NPT Brass 2.64 1.09 15/16