FOTGA Lens Tripod Mount Ring Collar Ring for Tamron 18-300mm F/3.5-6.3 Di III-A VC VXD Lens E Mount X Mount,Compatible with Arca Swiss Tripod Panoramic Head
FOTGA Metal Tripod Mount Ring Collar for Sigma 100-400mm SIGMA 100-400mm F5-6.3 DG DN OS E mount and L Mount Lens.Not work with SIGMA 100-400mm F5-6.3 DG OS HSM (Canon EF mount/ Nikon F mount).
It features arca swiss bottom plate for attaching your lens to Ball Head, Clamp or Panorama Head of Arca-Swiss standard.There are also 3/8"-16 and 1/4"-20 holes at the bottom for attaching on tripod,light stand,etc.
This tripod mount ring helps fix and balance your tele lens which is heavy or long lens hanging off the front of camera.
Made of aluminum alloy.Ring dia is 92.5mm/3.64in,weighs 166g/5.85oz.