For all terrain distance measuring. Housing made of high imipact plastic with belt loops and detachable lid. Includes a 2" wide belt and a handy 1" wide strap to keep the lid from popping open. 7" x 4" x 4". Comes with 6000 ft. of thread. Chainman II CMII$110.00 Replacement Thread for Chainman II6000' spool - white thread. CM-WS$3.85 Need more information? Please feel free to contact us at 1-800-592-6940 - Ask for Extension 547 or Internet Sales.