MADE IN THE UK – Manufactured in the United Kingdom for professional bricklaying and masonry applications, designed to meet the demands of daily use on residential and commercial construction projects COMPATIBLE WITH 50.8MM PROFILES – Designed for use with 50.8mm steel and aluminium bricklaying profile systems, providing a secure fixing point for accurate profile set-up and brick line control HEAVY-DUTY ZINC-PLATED STEEL – Manufactured from durable zinc-plated steel for corrosion resistance and long service life, suitable for repeated use in indoor and outdoor site conditions RHINOGRIP THUMBSCREW INCLUDED – Supplied with the RHINOGRIP thumbscrew system for secure clamping onto profile poles, helping maintain stable positioning and consistent alignment throughout the build REVERSIBLE THUMBSCREW POSITION – Thumbscrew can be fitted on either side of the Dori Block to suit different site layouts, corner details and working positions when setting out brickwork, Manufacturer: RHINOBUILD