Explore Scientific Twilight I Adjustable Head Mount and Tripod. This telescope head mount engineered by the professionals at Explore Scientific is made of powder-coated aluminum and worm gears on both axes. The Explore Scientific Twilight I Adjustable Head Mount & Chrome-Plated Steel Tripod features an adjustable angle head that can be tilted forward or back at a 45 angle or you can point it straight up for viewing at the zenith. The chrome-plated steel tripod of the Explore Scientific Twilight I Alt-Azimuth Mount & Tripod has adjustable legs and a wide foot print of 42 inches for more stability and the spreader bar locks against the inside of the legs to secure the tripod even further and keep vibrations to a minimum. Specifications for Explore Scientific Twilight I Adjustable Head Mount & Chrome-Plated Steel Tripod: Tripod fully collapsed no mount head: 29.5" Tripod fully collapsed with head: 42" Tripod open retracted legs no mount head: 25" Tripod open retracted legs with the mount head: 38.5" at highest point 36" to the center of the mounting bracket Tripod open legs fully extended no mount head: 42" Tripod open legs fully extended with the mount head: 55.5" at highest point 53" to the center of the mounting bracket Mount head dimensions: 14" x 7" x 4" Foot print: 42" Weight tripod base: 11lb; 5.0kg Weight mount head: 6.6lb; 3.0kg Total weight: 16.7lb; 7.6kg Package Contents: Explore Scientific Twilight I Adjustable Head Mount and Tripod Twilight I Adjustable Altazimuth Mount with Slow Motion Controls; Adjustable Metal Folding Tripod; Weight Capacity of 18 lbs; Vixen-Style Dovetail Fitting.