E-Z Drill offers a downsized version of its Model 210B On-Grade concrete drill, the model 110B. The drill operates on the subgrade and fits in a 3-foot patch. A minimum of 50 cfm is required to run the totally pneumatic system, which can drill holes from 5/8 inch to 2 inches in diameter to a depth of 12 inches. E-Z Drill’s patented roller bearing feed system eliminates carriage friction during drilling, allowing an operator to drill faster with a smaller drill motor. A mobile system helps the operator to quickly and easily reposition the drill for increased productivity. Dual-purpose guide wheels slide horizontally along the concrete slab but also can be flipped down for simple transport.