Main features: <br /> 1. Specially designed for Nikon AF-S 105mm f/2.8G IF-ED VR MICRO macro lens, made of aviation aluminum, CNC precisely machined, surface anodized;<br /> 2. Hollow-out structure based on the lens features, reserved with focus observation window, avoiding the lens switch; sectional design, using 3M film at the lens junctions, 180-degree quick locking mechanism;<br /> 3. In order to balance the function, quick release plate is designed at the right side, the overall weight is about 175g, internal diameter is about 80.5mm, ring width is about 19.8mm, bottom comes with quick release plate of 65mm long, stainless steel anti-skid nail, reserved with 1/4 and 3/8 Screw holes;<br /> 4. Quick release plate is AS 39mm standard, compatible with RRS / ARCA-SWISS / KIRK / WIMBERLEY / MARKINS / SUNWAYFOTO / KANGRINPOCHE / BENRO / SIRUI / MARSACE / ISHOOT ball head of Arca 39mm fit, suitable for IS-JZ30 / IS-JZ50 / IS- JZ64 / IS-QJ58 / IS-QJ64 / IS-JZ60BK / IS-JZ70MFT / IS-JZ80BK clamp;<br /> 5. Advantages: greatly improve the problem of focusing vibration, especially for small depth of field shooting; shortcomings: the tripod ring can’t be rotated, don’t support vertical shooting, the center of gravity is at front, quick release plate is not in the middle. Package Includes: <br /> 1 x iShoot Tripod Mount Ring IS-N105G<br /> (Note: The other items in the photos not listed here are for illustrating only, not included)