Packing List: 1. Led aluminium profile housing: 50cm/setx2 2. End Cap: 2pcs/setx2 3. PC cover: Milky PC cover 50cm/setx2 4.Mounting clips :2pcs/setx2 5.Screws :2pcs/setx2 6.3m Tape: 2pcs/setx2 The strip is not included ,if you need the strip ,please contact with the seller For customized Length ,please contact with the seller for solution Advantages High Standard 6063 Aluminum Channel , Easy Installation, Clean Outlook and Flush Pre Cut End Milky Diffuser does not only protect the exposed strip from dust and moisture but also evening and smooth out the lights well with 90% Transmittance rate and without color Shift .The cover is protected by removable film initially The channel can be trimmed to required length easily by hacksaw or grinder,the cover can be cut by utility knives and scissors, 45 degree Mitre is supposed for the corner,Clips can Also be Used as Joiner Functions 1.Protect the exposed strip from Dust,Moisture and inadvertent touch,extend the lifespan of the light fixture 2. Provide a New Professional Clean finish ,Take LED Ribbon to the next level 3. Breake up the harshness dots from the Emitting Diode without Color Shift, evening out the lights to a smooth glow For Diffusion Effect THMOOTHER Is specializing in LED Strip Channel Diffuser System Diffusion Effect depends on 2 things: 1. The number of LEDs per m 2. The depth of the profile Hence when using LED tapes such as those which only have 30 LEDs per me, no amount of diffuser is going to make the like look seamless. If this effect is desired, we recommend high indensity LED (120 led per meter or more ) for a seamless constant glow, in combination of our profiles over 12mm deep