Features: This spanner is made of qualified stainless steel, solid and firm, after grinding and polishing treatment, the is without burr. The maximum opening is 110mm, with a double head design and a flat end, which is convenient to use. Three rows of holes can achieve the purpose of extending the tool deep into the lens barrel and fixing it with four round head screws. Comes with 2 hex screw and a hex wrench, it can be used to replace two inner hex screws, use them to tighten the spanner opening tool. Arc design, anti-slip and more firmly lock the screw hole, not easy to damage the lens. Great accessory for DSLR camera lens. Specifications: Condition: 100% Brand New and High Quality Material: Stainless Steel Color: Silver Suitable for Lens Caliber 5-140mm / 0.2-5.5inch Size: Approx. 15.5 x 12.5cm / 6.1 x 4.9inch Minimum Opening Width: Approx. 10mm / 0.4inch Maximum Opening Width: Approx. 110mm / 4.3inch Weight: Approx. 154g Packing List: 2 x Hex Screws 1 x Hex Wrench 1 x Arc Spanner Opening Tool Note: Please be careful to avoid damaging your camera.