... LED Letter sign LED Channel Letter Arrow and "J" Shape 3/4" for J shape and 1", 1.5", 2", 3" and 4" for Arrow LED Letter ... sign, Trim cap for Channel Letter Trim Cap-plastic-aluminum ... and seamless.It can be easily made into any letter, Chinese charater or picture. It has thoroughlychanged the ... 3/4", J shape and 1", 1.5", 2", 3" and 4". LED Letter sign