I have been using the drill chuck since the second week of May 2018. The concentricity and the accuracy of the cartridge is better than the manufacturer claims. The chuck is used in a Nova drill press replacing my 20 year old Delta drill press which I upgraded with a Jacobs chuck. While Albrecht cartridges have a name and German origin, the Spanish machine tool industry produces equipment that is second to none in quality and accuracy. For example, Kondia and Lagun are just two Spanish machine tool manufacturers that produce high quality machine tools. The Llambrich cartridge belongs to the same category of very well built and high quality devices. I would prefer the cartridge to the Jacobs cartridge and the Llambrich is just as accurate as the Albrecht for less money. When you buy a name, be sure to get Albrecht. If all you are looking for is a superior drill chuck at a reasonable price look no further than Llambrich.