| Milton 1/4 NPT A Style Coupler and Plug Kit Milton (S-213) 1/4in. NPT A-Style Coupler and Plug Kit (5-Piece) This pneumatic 5-pc. Milton (S-213) A-Style coupler/plug air accessory kit includes a variety of couplers and plug air fittings with a 1/4in. basic flow size (air handling capacity).... more | | $18.99 $10.75 go to store |