It features an Arca-Swiss base plate to attach your lens to a ball head, clamp or panoramic head according to Arca-Swiss standard, as well as 3/8″-16 and 1/4″-20 holes on the bottom for mounting on a tripod, light stand, etc. | This tripod mounting ring helps you fix and balance your heavy or long telephoto lens hanging from the front of the camera. | Suitable for Sony FE 10-18 mm F4 OSS,FE 12-24 mm F4 G, FE 16-35 mm F4 ZA OSS,FE 16-35 mm F2.8 GM,FE 16-70 mm F4 ZA OSS,FE 18-105 mm F4 G OSS PZ, FE 18-135 mm mm F3.5 mm -5.6 OSS,FE 24mm F1.4 GM,FE 24-70mm F4 ZA OSS,FE 24-70mm F2.8 GM,FE 24-105mm F4 G OSS,FE 24-240mm F3.5-6.3 OSS,FE 28-70mm F3.5-5-5.6 OSS,FE 35mm F1.4 ZA,FE 50mm F1.4 ZA,FE 50mm F2.8 Macro,FE 85mm F1.4 GM,FE 85mm F1.8,FE 90mm F2.8 Macro G OSS,FE 100mm F2.8 STF GM OSS,FE 12-2 4mm F2.8 GM, E 16-55 mm F2.8 G, E 70-350 mm F4.5-6.3 G OSS,FE 135 mm F1.8 GM, etc. | Compatible with Tamron 17-28 mm F2.8 Di III RXD A046 (E-mount), for Tamron 28-75 mm F2.8 Di III RXD A036 (E-mount), for Tamron 70-180 mm F2.8 Di III VXD A056 (E-mount), for Tamron 17-7 0 F2. 8 Di III-A VC RXD B070 (E connection), for Tamron 28-200 mm F2.8-5.6 Di III RXD A071 (E connection), for Tamron 70-300 mm F4.5-6.3 Di III RXD A047 (E connection). Made of aluminum alloy, ring diameter:61mm, weight:153g | Package Includes: 1 x Lens Tripod Mounting Ring