Metal Tripod Mount Ring D (B) Lens Collar Support Holder Bracket for Canon EF 100mm f/2.8L Macro IS USM Lens, replaces Canon Tripod Mount Ring D (B) Main features: 1. Referring to Canon original tripod mount ring D (B) design, with precise all-metal material processing and surface hardening treatment, fine, smooth and wear-resistant; Junctions of new version are fixed by steel needles; locks use stainless-steel-spring screw; the bottom is electroplated copper nut, more exquisite and perfect; 2. The lens collar is made of all-metal material, there is a 1/4 screw hole at bottom; the lens support bracket with flocking inside and locking knob, combining tightly to the lens without gaps, sturdy and durable; 3. The surface is treated with automobile-painting, and the color is consistent with the lens, integrated with the camera and lens; inner diameter: 68mm; 4. Uses aviation aluminum die-casting, polished 3 times, thickened flocking; structure optimized, the overall intensity increases 30% and the surface hardness increases 20% than the old version, but weigh is still 140g; 5. Very solid. Packed in the lightweight plastic packaging. Applicable to: Canon EF 100mm f/2.8L Macro IS USM Lens Package Includes: 1 x iShoot Tripod Mount Ring IS-TMR II for Canon EF 100mm f/2.8L Macro IS USM Lens ( Note: The other items in the photos not listed here are for illustrating only, not included)