Item type: Lens Tripod Mount Ring <br>Condition: 100% brand new <br>Material: aluminium alloy <br>Weight: Approx. 242g <br>Color: black <br>Ring inner diameter: Approx. 83mm/3.3in <br>Ring width: Approx.25mm/0.98in <br>Quick release plate: Approx. 70mm/2.8in<br>1、Suitable for Sigma 135mm f1.8 DG HSM Art lens. <br>2、Made of aviation aluminum, CNC precisely machined, hollow-out weight reduction design, polished and surface anodized finish. <br>3、Customized according to the lens. Positioning by the switch and mount. Cannot be rotated. All the corners are rounded, prevent from wearing. <br>4、Inner diameter is about 83mm, width is about 25mm, added quick release plate feature, plate length is about 70mm, with 1/4 inch and 3/8 inch screw holes and stainless steel anti-slip screw. <br>5、The quick release plate adopts AS standard, compatible for RRS/ ARCA-SWISS/ PMG/ WIMBERLEY/ MARKINS/ PHOTOCLAM/ SUNWAYFOTO/ BENWAYO/ SIRUI/ MARSACCE/ ISHOOT, etc. Suitable for IS-JZ30/ IS-JZ50/ IS-JZ64/ IS-QJ58/ IS-QJ64-FD/ IS-JZ60BK/ IS-JZ70MFT/ IS-JZ80BK etc.Lens tripod mount ring is not suitable for Sigma mount 135mm f1.4 DG HSM Art lens.1 x&nbsp;Lens Tripod Mount Ring<div>1 x Inner hex wrench</div>