Hammering fastener for fixing material to concrete block, has connection portion provided in head of movable leg for extracting movable leg after implantation, using extraction tool

摘要

The fastener has a movable leg (3) having a head (5) and a fixed leg (2) having a head (4). A protrusion (6) is provided in the fixed leg for opening up the movable leg. By hammering the head of movable leg, leg is driven in and opened out, and material (B) is fastened to block (A). A connection portion (21) is provided in the head of movable leg for pulling out the head and leg with an extraction tool (D).