About this item The main body of this improved macro focusing rail slider is made of Aviation Aluminum, CNC precisely machined, surface anodized; the max size with knob is about 203mm long, 106mm wide, and 34mm high, net weight is about 420g; Two same macro focusing rail sliders can be combined together to form 90 degrees, becoming a 4-way macro focusing rail slider, and providing a vertical moving distance of about 118mm and horizontal moving distance of about 118mm, better for macro shooting. Please check the Ninth Photo for reference; The close-up shooting head with stainless steel gear spiral zoom lever, stainless steel clutch, intermeshing helical power transmission, can move back and forth in precise mm distance for micro-adjustment focusing, convenient for close-up photography of micro object, the tested maximum horizontal load weight is about 3.4kg; The width of the clamp on the close-up shooting slider is about 73mm, with spirit level, Arca-Swiss / RRS standard fit; the slider is about 150mm long, bottom is designed with quick release plate structure of Arca-Swiss / RRS standard fit; The macro focusing rail slider compatible with Arca-Swiss / RRS / KIRK / WIMBERLEY / MARKINS / SUNWAYFOTO / KANGRINPOCHE / BENRO/SIRUI / MARSACE quick release plate and ballhead of Arca-Swiss / RRS standard fit; suitable for iShoot IS-JZ30 / IS-JZ50 / IS-JZ64 / IS-QJ58 / IS-QJ64 / IS-JZ60BK / IS-JZ70BK / IS-JZ80BK. › See more product details