The Spectra Precision 5220-13-BLK is an all-wood heavy-duty tripod with a dual lock. Made of high-quality birch hardwood with wide-frame extension legs and 123mm (0.91″) dowels. Large 6.5″ (165mm) aluminum head. Twist lock models with die-cast leg bands for maximum locking. Quick clamps, adjustable, for quick setups. Powder Coated metal fittings. An aluminum shoe with hardened steel replaceable shoe points. Instrument Fastener brass 5/8-11. Includes heavy-duty poly-webbing shoulder strap for ease of carrying to the job site (not shown).