Thickened Aluminum Tube for Job Site Use：Made with a 28 mm aluminum tube and 1 mm wall thickness this survey pole offers dependable support for measuring and marking work in the field Clear 20 cm High-Visibility Markings：The easy-to-read 20 cm color bands make measurements clear at a glance helping save time and improve accuracy during surveying tasks Screw-In Connection for Secure Assembly：The screw-in connection design allows each section to fit together firmly making setup simple while supporting free splicing for different working needs Oxford Storage Bag Included：Comes with a convenient Oxford storage bag for easy carrying organized storage and better protection during transport between jobs Multiple Length Options for Different Work Needs：Available in 2 meter 3 meter and 5 meter lengths this measuring rod is suitable for site survey construction marking land layout and engineering measurement, Manufacturer: HGOuhK