Features: 1. Made of Aviation Aluminum precisely machined, hand-, anodized surface with non- rubber and 1 or 4inch stainless steel screw and spring 2. Referring to the structure design, added the features of finger position and quick release plate, the volume is about 91mm x 38.5mm x 31mm, net weight is about 95g 3.Quick release plate is AS 39mm standard, compatible for or for -SWISS or for KIRK or for or for MARKINS or for or for KANGRINPOCHE or for or for or for MARSACE or ball head of 39mm fit. Bottom with a starndard -Swiss dovetail size:800mm, 600mm Material:aluminum colour:Black Package Contents: 1 x Metal Tripod Mount Ring Replacement Base IS-THRF680 Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is 1-3cm.