General description OX Pro Dual Auto Lock Tape Twinpack includes two 5m / 16ft tape measures designed for durability and ease of use. Featuring a patented dual locking mechanism, these tape measures ensure accurate measurements while providing a robust rubber casing that withstands knocks and drops. The super compact ergonomic shell and handy belt clip make it easy to carry and access while working. Technical specifications Length: 5m / 16ft Material: Extruded nylon blade Mechanism: Patented dual locking