OX Tools 300mm Pro Aluminium Rafters Square Metric OX-P506530 The OX-P506530 300mm Pro Aluminium Rafters Square Metric is ideal for tradespeople looking to work with precision. Although with its easy-to-read laser-etched marking, that provide twice the accuracy of stamped squares, DIY enthusiasts will also benefit. This product benefits from metric markings and conversion tables for rise and run application and an extra-thick extruded aluminium body, anodised aluminium construction. For precision and durability, The OX-P506530 300mm Pro Aluminium Rafters Square Metric offers a lot to professionals and amateurs alike. This product comes as a single set. Features and Benefits: Scribe notches for marking 5mm increments Easy read laser-etched markings provide excellent readability and twice the accuracy of stamped squares Metric markings and conversion tables for rise and run application Extra-thick extruded aluminium body, anodised aluminium construction for durability (resists rust and