Heavy duty 6" aluminium alloy speed square. Includes a handy 6" ruler with clear markings for quick measuring and scribing. Instructions are not included so please ensure you know how to use this tool if purchasing. Product marked as 6" but has markings up to 7". They can be used as an accurate saw guide, protractor and tri-square, 90° and 45° mitre square. Easy to read scale allows you to find any angle from 0-180 degrees. Instructions are not included so please ensure you know how to use this tool if purchasing.