LightingWill 5-Pack 3.3ft/1M 9x23mm Black U-Shape Internal Width 12mm LED Aluminum Channel System with Cover, End Caps and Mounting Clips Aluminum Extrusion for LED Strip Light Installations-U01B5 Ultra thin U-shape anodized black aluminum extrusion profile for both recessed and surface mount LED lighting projects 12.15mm inner width for PCB width &lt;12mm LED strips, such as 3528, 5050 & 5630 LED strips (For 20mm inner width, Please search B01DM7FISG) Oyster white cover: provide a well diffused light that is comparable to neon effect, ideal for decorative and accent lighting Aircraft grade aluminum, better heat dissipation, providing great protect for delicate LED strip lights Package includes: 5x 1m/3.3ft per segment with cover (x5), end caps (x10) and mounting clips(x10).For additional end caps please search B01GP876E8; Extra mounting clips please search B01GP873LY on Amazon