Feature
· Built Tough with Rugged Aluminum Alloy Material, Stay Solid and Resist Bending
· Easy Fit with Half-Open Design, Can Fit Diameter 33.5-35mm of Side Focus Knob
· 5mm Width Wheel Hinge for DIY Sticker Markings to Track Your Adjustments Easily
Specifications
· Outer Diameter: 88.2 mm / 3.47 in
· Inside Diameter: 36 mm / 1.42 in
· Weight: 75.5 g / 2.66 oz
· Material Aluminum Alloy
· Items in the Package: One Pair of Spare Plastic Sealing Rings, T15 Torx Wrench, Screwdriver, etc.
· Easy of Use: Loosen the screw, slide the side wheel onto the side focus knob and tighten the screw.