Pin Type Anchors are impact-expansion type concrete anchors with an interior hole extending the length of the anchor. A hardened drive pin comes along the assembly inserted in the bolt. The anchor is threaded on the upper portion where the drive pin is inserted.Pin type anchor bolts find their use in soft masonry to reduce the effect of vibration and pressure. The most significant advantage of using these bolts is that it can be replaced without affecting the holding strength of the anchor system