FocusFoto Metal Tripod Collar Mount Ring 1/4" & 3/8" for Sigma 100-400mm F5-6.3 DG DN OS L/E-mount Lens & for Sigma 105 mm f/1.4 DG HSM Art (EF/FX/FE/L-Mount) Lens, Compatible with Arca Swiss Standard

Description:The tripod mount ring mount on the tripod, it helps you fix and balance your tele lens which is heavy or long lens hanging off the front of camera.It features Arca-compatible dovetail plate which allow you attach your lens to Ball Head, Clamp or Panorama Head of Arca-Swiss standard.Reserved multiple 1/4"-20 & 3/8"-16 thread screw holes at the bottom for attach lens to tripod directly.Made of aviation aluminum alloy and CNC precision machining, anodizing surface treatment, right weight and strong building.100% fits for Sigma and does have same construction.Specifications:Made by metal with very high qualityThe UNC (Unified National Coarse Thread) : 1/4" & 3/8"Compatibility: Arca-Swiss StandardRing inside diameter: 82mmBaseplate Length: 80mmBaseplate Width: 38mmColor: blackNet Weight: 166gCompatible with:For Sigma 105mm f/1.4 DG HSM Art (EF/FX/FE/L-mount) For Sigma 100-400mm f/5-6.3 DG DN OS (E-mount, L-mount) Note: NOT compatible with Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary (EF Mount, F Mount) lens and other lensesPackage Includes:1 x Lens Tripod Mount Ring

• The tripod mount ring mount on the tripod, it helps you fix and balance your tele lens which is heavy or long lens hanging off the front of camera.
• It features Arca-compatible dovetail plate which allow you attach your lens to Ball Head, Clamp or Panorama Head of Arca-Swiss standard.
• Reserved multiple 1/4"-20 & 3/8"-16 thread screw holes at the bottom for attach lens to tripod directly.
• Made of aviation aluminum alloy and CNC precision machining, anodizing surface treatment, right weight and strong building.
• Compatible with Sigma 105mm f/1.4 DG HSM Art (EF/FX/FE/L-mount) & For Sigma 100-400mm f/5-6.3 DG DN OS (E-mount, L-mount); Note: NOT compatible with Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary ( EF Mount, Nikon F Mount ) lens and other lenses