Simpson 1/4" Drop-In Internally Threaded Anchor DIAB25 Hinge Boring Bits but they are available as

but they are available as an optional accessory for operators who need to form spiral or circular rebar configurations beyond standard angle bends

The LGT3-SDS2

the CCOQ4-SDS2

The 1212HT should be installed with 5/8 in

Simpson 1/4" Drop-In Internally Threaded Anchor DIAB25 Hinge Boring Bits but they are available asThe Simpson Strong Tie DIAB25 Drop In Internally Threaded Anchor is a displacement controlled expansion anchor engineered by Simpson Strong Tie for fast, reliable anchoring of 1 4 in. threaded rod into concrete and masonry base materials. Featuring improved geometry in the preassembled expansion plug, this redesigned anchor installs with 40% fewer hammer hits than previous drop in anchor designs, making it one of the most efficient internally threaded