Won the IF and Red Dot Awards | 【Import AGC Optical Glass 】The filters in this kit are made by importing Japanese optical glass, both sides with nanometer coatings (total 36 layers), waterproof, scratch-resistant, oil proof. | 【ND Filters Function】ND1000 filter for expending the exposure time 10-stops to achieve to slow shutter to be used to record movement in subjects such as waterfalls, providing a silky smooth effect to flowing water. The filter frame avoids filter for accidental fall damage(≤1.5m). | 【CPL Filters Function 】Allow you to remove reflections from non-metallic surfaces, such as water and glass, also in color and contrast enhancement, especially for the blue sky and white clouds. | 【Original Design 】Filter holder can handheld both CPL and nd1000 filters, ultra-slim frame and a large diameter ensure no vignetting on a wide-angle lens, and rear CPL design for convenient installation and removal. | 【Kit Includes 】Filter holder + ND1000 filter + CPL filter +4 * adapter rings(67mm/72mm/77mm/82mm)+ Leather filter bag. Note: Only compatible with K&F Concept X-PRO square filter, general square filters need the use of K&F Concept filter frame. | 【Other Size Adapter Rings】We have 49-62mm X-PRO square system adapter rings, please search code 49mm: B09QKKLPJT, 52mm: B09QKJ1YXD, 55mm: B09QKJXSGQ, 58mm: B09QKKBH84, 62mm: B09QKJPDWY