Diamond Core Drilling Machine, 4in Handheld Wet Concrete Core Drill Rig, 1100-2400RPM Two Speed & 1-1/4" Thread & 2 Bubble Levels, 3-4in Drilling Diameter for Concrete Brick Block Stone, 1500W

4-inch
Wet Drilling: Our lightweight handheld core drilling machine can perform wet drilling, and you can feel assured of accuracy when boring holes in a variety of surfaces with a 3.1 -4 in / 8- 10.2 cm diameter hole capacity. More importantly, a industrial-grade 4in core bit with 1-1/4" thread is thoughtfully included.
Two Gear Speed: Our 2-speed electric core drill, 1100RPM / 2400RPM, has a convenient gearbox allowing different speeds to match the type of material being drilled and helping control the ideal speed for the job. 1500W strong motor to ensure the machine drilling fierce and consistent work.
Effortless Drilling: Our handheld drilling rig has a rustproof steel forged output shaft to bear more pressure, an upgraded one-touch water pipe connector for a stable water supply, and a shoulder rest for you to easily carry the core drill rig on your shoulder and reduce friction caused by drilling. 2 Bubble Levels for
Precision: Two fluorescent yellow-green measuring bubble level tools are placed on the core drilling housing to make adjustments more convenient, accurate, and easy to use. The bubble is clearly visible from all sides, helping you adjust the bit position and ensure the holes punched are at the same level.