MP10 Euro Cylinder & Turn 70mmEuro Cylinder and Turn. To lock the door on the inside, simply use the turn knob, there's no need for a key. Overall length, external and internal dimensions are; 70mm (35 35mm). These MP10 restricted 10 pin cylinders provide a high degree of security, having met the standards identified by Secured by Design the UK policed flagship initiative. Features include; anti drill, anti pick, anti bump, fire door rated. Certified to British European standards