Product Introduction：

nternal thread anchor bolt b-ig is an extension of bolt type anchor bolt type B product. There is no need for reaming during installation, so special reaming tools are not required. With the tightening of bolts, the expansion vertebral body of anchor bolt moves relative to the expansion sheet, which makes the expansion plate open automatically and realizes the safe anchoring. The edge distance and spacing are smaller than that of percussion anchor bolt. It can be used with various types of bolts or screws, and can adapt to different anchor thickness by adjusting the screw in depth of bolts. Easy to disassemble and install.