13H310 up for sale is a ingersol rand special military solenoid p/n D30454, this unit measures 4 inches long x 2 wide x 1 1/4 thick, has two slots to mount this with screws, has two port 1/8 NPT one on bottom one on side, nice new valve for many uses, this is 12 Volt DC actuated, has 2 wires out of the coil. Check out my other items.