Greenlee 868 Screw Anchor Expander for Caulking Size 1/4 20

SCREW ANCHOR EXPANDER: Allows you to quickly and securely set expansive screw anchors in masonry, regardless of thickness EASY TO USE: Simply screw the anchor onto the expander, insert it into the drilled hole, strike the expander head with a hammer, and unscrew the expander DURABLE CONSTRUCTION: Hardened alloy steel build can withstand heavy-duty use to provide superior durability with a long tool life MADE FOR CAULKING ANCHORS: Screw anchor bolt size of 1/4-20 and made for use with anchor number 84299 REQUIRED HOLE SIZE: Minimum dimension of the drilled hole size required for use is 1/2 in. in diameter and 7/8 in. in depth, Weight: 0.35 Pounds, Manufacturer: Greenlee