As offset screwdriver attachment very appropriate! I also own a Schnellspannborhfutter with octagonal connection. This chuck I put possibly in angle screwdriver and am therefore able to drill even around corners, similar to a Winkelbohrfutter what I can save so! Here, however, it must be noted that the chuck is of course not clamped in the angle driver intent, but is simply plugged in (such as a screw-bit) and a certain play is present. Thus, a certain eccentricity of the drill is given physically and to accept, but which falls during drilling itself is not or negligible. Overall a great purchase! Would I buy again at any time!