O.D. tube size x Female pipe size. Sold in bags and individually flag tagged. Manufactured to include no more than 0.25% weighted average lead content on wetted surfaces. No. 750066-0302: Size: 3/16" x 1/8", Pressure Rating: 400 psi up to 250 F, Material: Brass, Pkg Qty: 1 No. 750066-0402: Size: 1/4" x 1/8", Pressure Rating: 300 psi up to 250 F, Material: Brass, Pkg Qty: 1 No. 750066-0404: Size: 1/4" x 1/4", Pressure Rating: 300 psi up to 250 F, Material: Brass, Pkg Qty: 1 No. 750066-0408: Size: 1/4" x 1/2", Pressure Rating: 300 psi up to 250 F, Material: Brass, Pkg Qty: 1 No. 750066-0604: Size: 3/8" x 1/4", Pressure Rating: 200 psi up to 250 F, Material: Brass, Pkg Qty: 1 No. 750066-0606: Size: 3/8" x 3/8", Pressure Rating: 200 psi up to 250 F, Material: Brass, Pkg Qty: 1 No. 750066-0608: Size: 3/8" x 1/2", Pressure Rating: 200 psi up to 250 F, Material: Brass, Pkg Qty: 1 No. 750066-0806: Size: 1/2" x 3/8", Pressure Rating: 200 psi up to 250 F, Material: Brass, Pkg Qty: 1 No. 750066-0808: Size: 1/2" x 1/2", Pressure Rating: 200 psi up to 250 F, Material: Brass, Pkg Qty: 1 No. 750066-1008: Size: 5/8" x 1/2", Pressure Rating: 150 psi up to 250 F, Material: Brass, Pkg Qty: 1 No. 750066-1012: Size: 5/8" x 3/4", Pressure Rating: 150 psi up to 250 F, Material: Brass, Pkg Qty: 1 No. 750066-1408: Size: 7/8" x 1/2", Pressure Rating: 75 psi up to 250 F, Material: Brass, Pkg Qty: 1 No. 750066-1412: Size: 7/8" x 3/4", Pressure Rating: 75 psi up to 250 F, Material: Brass, Pkg Qty: 1