... ;5.Expanding clip will not fall off or twist in the hole.Dorp in Anchor Other Names1.thunderdrop2 multi-set concrete anchors3 ... deeper.3.Fire resistanceNOTED:Perfect expansion and specially designed built-in plug ensures full expansion of anchor.The test values listed ... manufacturer of many kinds of anchors,.We can supply drop-in anchor, wedge anchor, cut anchors,sleeve anchor,heavy duty anchors ...