A quality drill chuck of modest dimensions with a high run-out-precision for professional use. The entire casing and all parts are of steel. The chuck takes drills with a shaft of 1 to 13 mm. It is made in Germany by the company Röhm, which is known for the high quality products they produce. These drilling are distinguished by their high precision (run-out precision 0.25 mm). They are hardened, balanced, the ball bearings run very smoothly and the body is only 42 mm in diameter. A key is needed to operate them. They come with a B12 morse taper 1, 2 or 3 shaft.