Feature:1. Can install 5 2inch filters inside, the number 15 indicates the position of the filter.2. Just pay attention to the reference number of each filter when installing, and then rotate the knurling wheel until the required number is displayed in the small mount.3. The whole is made of metal, the surface is smooth, the workmanship is exquisite, strong and wear-resistant.4. There is a 2inch adapter on one side of the filter wheel that can be connected to a 2inch eyepiece. The other side has an M48 threaded camera adapter and a rotating lock ring.5. The inside of the filter is absolutely opaque, allowing you to image without any reflections or stray light.Specification:Item Type: Telescope Filter WheelMaterial: Full MetalEyepiece Side Diameter: Approx. 5.1cm/2inCCD Side: M48 x 0.75Weight: Approx. 862g/1.9lb.Package List:1 x Telescope Filter Wheel1 x WrenchNote:1: Do not place the product too high or it may drop and cause damage to the product2: Do not prevent other items in the filter wheel to avoid internal damage