UNIKA UR21 Vibration ST shank, large diameter (ventilation fans, air conditioners, etc.)

A core drill for vibration that combines precision and efficiency with a blade shape that is optimal for hard wall materials, etc. Basic models available in sizes from small to large.
The cutting edge is given small vibrations and rotations, which crushes the workpiece while cutting, allowing for speedy drilling.
Complete set including center drill, body, and shank assembly.
The body can be easily replaced without tools, and can be easily attached and detached with one touch.
The shank is common, so by replacing the body and center drill, various types of holes can be drilled.
The specifications have been changed so that a safety cover that was not possible to install on previous models can now be attached.
Blocks, bricks, mortar, hard siding boards, gypsum boards, soft siding boards
* Please use gypsum board and soft siding board in rotation mode.