iShoot Lens Tripod Mount Ring for Tamron 100-400mm f/4.5-6.3 Di VC USD (A035), CNC Machined Lens Collar Support Bracket Holder, Bottom is ARCA Fit Quick Release Plate for Tripod Ball Head ARCA-SWISS Type Main features: 1. This lens collar is tailor-made for Tamron 100-400mm f/4.5-6.3 Di VC USD (A035); the tripod mount ring is referencing to and modified from Tamron original standard design, details are improved, quick release plate feature is added to the bottom, more practical than the original lens collar; 2. The lens support adopts lightweight design of hollow, with stainless steel screw, net weight is about 180g; the inner diameter of the tripod ring is about 81.5mm, the width is about 18mm, with 3M film inside for protecting the lens from scratches; 3. The bottom of the lens bracket is 90mm detachable lengthening quick release plate, with 1/4” and 3/8” screw holes and stainless-steel anti-slip screws at the bottom; 4. The tripod mount ring is made of high quality Aviation Aluminum, lightweight and solid; precisely machined by world-class high-end CNC turning center, surface anodic oxidation; appearance and exquisite workmanship is much better than similar products made by mold; 5. This lens holder bottom Quick Release Plate is 39mm Arca-Swiss fit, compatible with RRS / ARCA-SWISS / PMG / WIMBERLEY / MARKINS / PHOTOCLAM / SUNWAYFOTO / BENRO / SIRUI / MARSACE / ISHOOT ball head of Arca 39mm fit, suitable for iShoot IS-JZ30 / IS-JZ50 / IS-JZ64 / IS-QJ58 / IS-QJ64-FD / IS-JZ60BK / IS-JZ70MFT / IS-JZ80BK. Suitable for: Tamron 100-400mm f/4.5-6.3 Di VC USD (A035) Package Includes: 1 x iShoot Tripod Mount Ring IS-TA140 Note: The other items in the photos not listed here are for illustrating only, not included.This lens holder bottom Quick Release Plate is 39mm Arca-Swiss fit, compatible with RRS / ARCA-SWISS / PMG / WIMBERLEY / MARKINS / PHOTOCLAM / SUNWAYFOTO / BENRO / SIRUI / MARSACE / ISHOOT ball head of Arca 39mm fit, suitable for iShoot IS-JZ30 / IS-JZ50 / IS-JZ64 / IS-QJ58 / IS-QJ64-FD / IS-JZ60BK / IS-JZ70MFT / IS-JZ80BK. The tripod collar mount ring is made of high quality Aviation Aluminum, lightweight and solid; precisely machined by world-class high-end CNC turning center, surface anodic oxidation; appearance and exquisite workmanship is much better than similar products made by mold;. The bottom of the lens bracket is 90mm detachable lengthening quick release plate, with 1/4” and 3/8” screw holes and stainless-steel anti-slip screws at the bottom;. The lens support adopts lightweight design of hollow, with stainless steel screw, net weight is about 180g; the inner diameter of the tripod ring is about 81.5mm, the width is about 18mm, with 3M film inside for protecting the lens from scratches;. This lens collar is tailor-made for Tamron 100-400mm f/4.5-6.3 Di VC USD (A035); the tripod mount ring is referencing to and modified from Tamron original standard design, details are improved, quick release plate feature is added to the bottom, more practical than the original lens collar;.Maximum Weight Recommendation: 180 Grams. Item Weight: 180 Grams. Brand: iShoot. Color: Black. Manufacturer: iShoot. Date First Available: December 28, 2019. Best Sellers Rank: #80 in Tripod Lens Mount Rings. Customer Reviews: 4.0 out of 5 stars 38 ratings 4.0 out of 5 stars. Item model number: IS-TA140. : B0837HCKJ1. Item Weight: 6.3 ounces. Package Dimensions: 6.57 x 5.2 x 4.06 inches.