Core Drill, Core Drilling, Core Drill Stand manufacturer / supplier in China, offering dBm22h Factory 580/1400/2800rpm Building Reinforced Concrete Max Drilling Water Source Handheld Diamond Core Drill, dBm22h Hand Held Core Drill Motor 3 Speed Core Drill Motor for Concrete/Stone Drilling 220V Diamond Core Cutting Machine, Top Quality 220/110V CE Approved dBm22h Rig Mounted Core Drill Motor 2200W 3 Speeds on Sale and so on.