Featuring waterproof, corrosion-resistant, and rust-resistant features, this camera filter can provide an extra layer of protection and extend its life. With this camera filter, which can be used in an overlapping way, you will be able to offer different styles of beauty and add fun to your shots. It is constructed of aluminum alloy material. The caliber of this product is 5.8cm. The filter is applicable to the original waterproof shell and the 46mm waterproof shell of the lens. Item Name: Camera Filter Material: Aluminum Alloy Features: Corrosion Resistance, Easy Installation, Waterproof Style A: 16X Filter, Fitment: for GP8, for GP9 Style B: Red Filter, Fitment: for GP9 Style C: Purple Filter, Fitment: for GP9 Style D: 16X Filter, Red Filter, Purple Filter, Fitment: for GP8, for GP9 Fitment: for GP8, for GP9 Size Details: Caliber: 5.8cm/2.28"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: Style A/B/C: 1 x Camera Filter 1 x Filter Holder 1 x Filter Cap 1 x Anti-Lost Cord or Style D: 3 x Camera Filter 1 x Filter Holder 1 x Filter Cap 1 x Anti-Lost Cord