INCLUDES: (50) 1/2" Drop-In AnchorsSPECIFICATIONS: Material: Carbon Steel Drill Bit Diameter: 5/8" Bolt Threads (Per in.): 13 Body Length: 2"Drop-in anchors are internally-threaded, deformation-controlled expansion anchors with a preassembled expander plug, suitable for ?ush mount applications in solid base materials. The anchor is set by driving the expansion plug towards the bottom of the anchor using the setting tool.