Video at Amazon.com See Quality of> 0.8-10 mm keyless chuck with 1/4 "hex shank I made a little video to visually better represent the runout of the chuck. For comparison, I have an old and a new> Wolfcraft 2625000 1 Quick-chuck 6 kant 6.5 mm You can clearly see how restless the great food runs. Finally, I spread the big feed several times to order clamping errors are excluded. Also three times off - and install the hex shank with mandatory cleaning of parts leads despite Loctite threadlocking at a better Result. I assure you that I know that the seller this review also looks that the test is real and not "getürckt". Of course, the food goes back, I continued to use the Wolfcraft that are just good and cheap! Wolfcraft 2625000 1 Quick-chuck 6 kant 6.5 mm