iShoot Lens Collar Tripod Mount Ring Can Replace TS-21 for Sigma AF MACRO APO 180mm F3.5 EX DG HSM,180mm F2.8 EX DG OS HSM,50-150mm f/2.8 EX DC OS HSM

Lens Tripod Mount Ring IS-SM720 Improved from Sigma TS-21
for Sigma AF APO 70-200/2.8 EX DG MACRO HSM and so on
Bottom is ARCA Type Quick Release Plate Feature
Compatible with Ball Head of RRS / ARCA-SWISS / KIRK Fit
Features: 1. Referencing to Sigma tripod socket TS-21 design and optimized, more practical than the original tripod ring, improved details, quick release plate feature is added;

2. Made of Aviation Aluminum, CNC precisely machined, surface anodic oxidation, split design, built-in non-slip paster, copper knob, stainless steel anti-skid nail;

3. Net weight is about 135g, inner diameter is about 71mm, width is about 17.5mm; bottom is quick release plate of 65mm long, reserved with 1/4 and 3/8 screw holes;

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 iShoot IS-JZ30 / IS-JZ50 / IS-JZ64 / IS-QJ58 / IS-QJ64 / IS-QJ64-FD / IS-JZ60BK / IS-JZ70MFT / IS-JZ80BK; Applicable to: Suitable for Sigma lens (Referring to Sigma original TS-21):
AF APO 70-200mm F2.8 EX DG OS HSM
AF APO 70-200mm F2.8 EX DG MACRO HSM
AF APO 70-200mm F2.8 II EX DG MACRO HSM
AF APO 50-150mm F2.8 EX DC OS HSM
AF APO 300mm F2.8 EX DG HSM
AF MACRO APO 150mm F2.8 EX DG HSM
AF MACRO APO 150mm F2.8 EX DG OS HSM
AF MACRO APO 180mm F3.5 EX DG HSM
AF MACRO APO 180mm F2.8 EX DG OS HSM
AF APO 100-300mm F4 EX DG HSM
APO 70-200mm F2.8 EX DG HSM
APO 120-300mm F2.8 EX DG HSM Package Including: 1 x iShoot Tripod Mount Ring IS-SM720
(The other items in the photos not listed here are for illustrating only, not included)