harga tiang listrik besi 6 meter No Further a Mystery
Tapcon screws are a popular anchor that stands for self tapping (self threading) concrete screw. Greater diameter screws are known as LDT's. This kind of fastener needs a pre-drilled hole—using a Tapcon drillbit—and so are then screwed into the hole utilizing a typical hex or phillips little bit.The driving energy is normally provided by firing