Eyecup Eye Cup Eyepiece Viewfinder For Nikon D3400 D5500 D3300 D5100 D3200 D750 D610 D600 D5200 D7100 D7200 D5300 Camera Replaces Nikon DK-20 DK-21 DK-23 DK-24 DK-25 Seals out stray light for improved viewfinder optics Soft TPU rubber allows for eye comfort, especially for eyeglass users Ergonomic oval shape is designed to fit your eyes better Rotates 360o for horizontal or vertical view