Our BoltHold asphalt anchors can be used on concrete.  A typical application is when asphalt has been applied over a concrete layer.

Use a 1” drill for SP10 and SP12.  Use 1.125" drill bit for SP18. The reason that one needs larger diameter drills in concrete than in asphalt is due to the flat tip of the anchor. In asphalt, the tip which is wider than the hole drill can easily be forced through the hole. In concrete forcing the tip through would damage the anchor.