Finish: Zinc & Clear Cr3+. The Drop-In Is A Deformation Controlled Wedge Anchor Suitable For Concrete Over 20N/Mm2. It Has An Internal Threaded Socket For Use With Bolts Or Threaded Rod Of Any Length. Lipped Rim Anchors Are Used To Keep The Anchor Flush With The Surface. Ideal When The Hole Depth Is Much Deeper As This Won't Effect The Anchor. The Perfect Anchor For Use In Concrete.PTDFORDIRMAMWA8LIPZ