... of a series of stats on surface and the other side is a series of round holes. Grooved panel is made ... of a series of stats on surface and the other side is a series of round holes. Both the diameter of ... -3, 14-2, 28-4, 38-4, 59-5. (Smaller side: 6-2/5-3)Size: 2440*128MM,Normally the thickness is 15MM ...