Segolike Electric Drill Variable Angle Grinder Connecting Rod Round Handle Converter Description:  - Triangle shape shank design clipping the drill tighter no easy to shake and slip - 10mm diameter nut.  - Fit for 8mm above drill chuck and 16mm or less inner diameter cutting tool.  - The shank is fit for 8mm above drill chuck.  - Can change the electric drill to angle grinder and cutting machine. Specification:  - Material: Iron + aluminum - Connecting Shaft Diameter: 10mm/0. 39''.  - Rod Shape: TrianglePackage Includes: 1 Set of Electric Drill Variable Angle Grinder Connecting Rod * Pay attention to the platen to prevent cutting loose pieces flying, people should no stand by when workingAs different computers display colors differently, the color of the actual item may vary slightly from the above images.