LightingWill 5-Pack 3.3ft/1M 9x17mm Silver U-Shape Internal Width 12mm LED Aluminum Channel System with Cover, End Caps and Mounting Clips Aluminum Profile for LED Strip Light Installations-U02S5 Ultra thin U-shape anodized silver 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 B01DM7FLEM) 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 B01GP872X8; Extra mounting clips please search B01GP873LY on Amazon.For Ultra thin Crystal LED Channel light with Acrylic covers,pls search B07GDKJ2GF.