Enhance the stability and handling of your camera lenses with this precision-engineered Lens Collar, compatible with Sigma 100-400mm F5-6.3 DG DN OS E Mount and Sigma 105mm F1.4 DG HSM Art (EF FX FE L mount) lenses. Crafted from durable aluminum alloy and finished with CNC machining, manual polishing, and anodizing, this lens tripod mount ring offers exceptional strength and reliability for professional and enthusiast photographers alike. Key Features: · **Wide Compatibility:** Designed specifically for Sigma 100-400mm F5-6.3 DG DN OS E Mount and Sigma 105mm F1.4 DG HSM Art lenses (EF FX FE L mount), ensuring a perfect fit and secure attachment. · **Versatile Mounting Options:** Features a 100mm quick mount base with integrated Arca port, plus 1/4in and 3/8in screw holes, compatible with a variety of tripod ball heads, panoramic stabilizers, and camera fixtures. · **Secure and Balanced Support:** Equipped with two safety stop screws on either side of the base to prevent accidental detachment, providing enhanced security and balanced support for heavy lenses. · **Premium Aluminum Alloy Construction:** Manufactured from high-quality aluminum alloy with CNC precision machining, manual polishing, and anodized surface treatment for excellent durability, corrosion resistance, and long-lasting performance. · **Lightweight and Portable Design:** Hollowed-out structure reduces weight without compromising strength, while a built-in strap hole adds convenience for easy carrying and quick attachment. Specifications: · Material: Aluminum Alloy · Interface: Arca port, 1/4in screw hole, 3/8in screw hole · Compatible Lenses: Sigma 100-400mm F5-6.3 DG DN OS E Mount, Sigma 105mm F1.4 DG HSM Art (EF FX FE L mount) Package Includes: · 1 x Lens Collar This Lens Collar tripod mount ring is an essential accessory for photographers seeking enhanced lens stability and improved balance during shooting. Its robust construction, versatile mounting options, and lightweight design make it an ideal choice for professional setups and on-the-go photography.