INCLUDES: (25) AnchorsFEATURES: Independently Adjustable Tri-Segment Clip For Follow-Up Expansion Dual Embossments On Each Clip Segment Installs Like A Standard Wedge Anchor Head Is Stamped With Simpson Sign And Size Id No Need For Special Bits Or Installation ToolsSPECIFICATIONS: Anchor Diameter: 1/2" Anchor Length: 3-3/4" Anchor Material: Zinc Drill Bit Diameter: 1/2" Thread Length (in.): 2-1/16The Strong-Bolt Is Wedge Anchor Designed For Optimum Performance In Both Cracked And Uncracked Concrete: A Requirement That The 2009 Ibc Places On Post-Installed Anchors. The Strong-Bolt Anchor Is Proven To Offer Increased Reliability In The Most Adverse Conditions, Including Cracked Concrete Under Static And Seismic Loading. The Proprietary Tri-Segmented Clip Has Dual Undercutting Embossments On Each Segment Which Enable Secondary Or Follow-Up Expansion If A Crack Forms And Intersects The Anchor Location.