Model: GQ110 Max. Drill diameter: 110mm Small, light, and easy control Professional drilling big hole Diamond ... core drill Model: GQ110 Max. Drill diameter: 110mm Small, light, and easy control Professional drilling big hole Specifications ... : Item: GQ110 Drilling Range: Φ 15-110mm Rated voltage: 220V Rated input power: 1480W NO-load speed ...