Sirius tuff jack tape measures are designed to provide maximum protection against drops and impacts they are encased in a shock resistant outer layer which also provides extra grip. Additionally, unlike the contractor and pro 2 ranges, these tape measures have magnetised hooks, enabling direct attachment to metal surfaces. They have thick, wide and durable nylon wrap blades designed for longer standout. Specifications bull scale metric imperial bull length 16ft 5 metres bull blade width 25mm features and benefits bull tough, shock resistant outer housing for durability bull removable belt clip bull fabric wrist loop bull nylon wrap blade bull thicker blade for longer standout bull magnetic hook for attachment to metal surfaces bull metric and imperial scales bull class ii accuracy bull stud joist markings every 16 and 19.2 bull tru zero feature hook slides to allow for its own thickness bull special slot in hook allows use of nail as a pivot to draw circles and arcs bull heavy duty spring and blade system for durability and long service life bull conforms to european measuring instruments directive mid specifications