EVERYTHING ABOUT HARGA BESI SIKU

Tapcon screws are a well known anchor that means self tapping (self threading) concrete screw. Much larger diameter screws are called LDT's. This type of fastener needs a pre-drilled hole—utilizing a Tapcon drillbit—and are then screwed into the hole employing a normal hex or phillips bit.The driving energy is normally supplied by firing a comb