1、This spanner is made of qualified stainless steel, solid and firm, after grinding and polishing treatment, the surface is smooth without burr. 2、The maximum opening is 105mm, with a double head design and a flat end, which is convenient to use. 3、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. 4、Comes with hex screw and hex wrench, it can be used to replace two inner hex screws, use them to tighten the spanner opening tool. 5、Great accessory for DSLR camera lens. Features: This spanner is made of qualified stainless steel, solid and firm, after grinding and polishing treatment, the surface is smooth without burr. The maximum opening is 105mm, 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 hex screw and hex wrench, it can be used to replace two inner hex screws, use them to tighten the spanner opening tool. Great accessory for DSLR camera lens. Specifications: Condition: 100% Brand New and High Quality Material: Stainless Steel Color: Silver Suitable for Lens Caliber 25-130mm / 1-5.1inch Size: Approx. 15.8 x 12.5cm / 6.1 x 5.1inch Maximum Opening Width: Approx. 105mm / 4.1inch Weight: Approx. 169g Packing List: 4 x Hex Screws 1 x Hex Wrench 1 x Spanner Opening Tool Note: Please be careful to avoid damaging your camera.