Equipment Big Guns Rat Hole Equipment: * 2 – 40′ Air Rigs * 1 – 120′ Rig * Pipe Sizes – 12 3/4, 14, 16, 20, 24, 30, 36 in stock additional sizes provided upon request. * Auger Sizes – 12 3/4, 14 1/4, 17 1/2, 20, 24, 26, 30, 36, 42, 48, 54, 66