LED module 1.steel and injection cover,high grade. 2.4PCS Epistar ... /moduleSize:55*33*6MMIP grade:IP68Cover:steel and injection coverLED color:white/blue/green/yellow/red/RGBInstallation: ... four wires to connect.3.For product shell we use ABS planstic,anti-corrosion,non-discolouring,PCB is ... material,good heat dissipation,low power consumption.4.We use high brightness 5050SMD led as our light source, ...