1. This lens collar is tailor-made and compatible with Sony FE 135mm f/1.8 GM, FE 50mm f/1.2 GM, FE 12-24mm f/2.8 GM, E 16-55mm f/2.8 G, E 70-350mm f/4.5-6.3 G OSS; Arca fit quick release plate feature is added to the bottom, more practical; | 2. The lens support adopts lightweight design of hollow, with stainless steel screw, net weight is about 150g; positioned by the switch and bayonet. Cannot be rotated. All corners of the lens collar are grinding rounded, with 3M film inside for protecting the lens from scratches; | 3. The bottom of the lens bracket is 55mm detachable Arca-swiss fit quick release plate, with 1/4" and 3/8" screw holes and stainless-steel anti-slip screws at the bottom for fixing lens to tripod directly; | 4. The tripod collar bottom is added 55mm long Arca fit quick release plate feature, compatible with Arca-Swiss 39mm fit tripod ball head, panoramic head and clamp directly; more practical than lens collars without QR-Plate. | 5. The tripod mount ring is made of Aviation Aluminum, CNC precisely machined, hollow-out weight reduction design, polished and surface anodized finish. The appearance and exquisite workmanship are much better than similar products made by mold.