Item type: Lens Tripod Mount Ring Base <br>Condition: 100% brand new <br>Material: aluminium alloy <br>Weight: Approx. 173g <br>Color: black <br>Size: Approx. 12x4.2x2cm/4.7x1.7x0.8in(included screw)<br>1、Lens tripod mount ring base is suitable for Sigma 150-600mm f5-6.3 DG OS HSM Sports. <br>2、Adopt aviation aluminum, CNC precision machining, surface anodic oxidation , stainless steel screws. <br>3、Add 3/8'' screw holes and stainless steel anti-slip nails, finger position is increased to easily grip, strap holes are added to easily hanging. <br>4、The data of the mounting holes are collected from original lens. <br>5、Add RRS/ ACRA standard quick releasr plate function, compatible for RRS/ ARCA-SWISS/ PMG/ WIMBERLEY/ MARKINS/ SUNWAYFOTO/ BENRO/ SIRUI/ MARSACCE/ ISHOOT, and other standard ballhead. It is suitable for IS-JZ30/ IS-JZ50/ IS-JZ64/ IS-QJ64/ IS-QJ64-FD/ IS-JZ60BK/ IS-JZ70MFT/ IS-JZ80BK etc.1 x&nbsp;Lens Tripod Mount Ring Base<div>1 x Wrench</div><div>4 x Fixing screw</div>