USP MPA1 4-1/2" Framing Anchor (100 Pack) Designed for both overlapping and butt joints USP MPA1 4-1/2" Framing Anchor (100 Pack) Features: One anchor allows six attachment variations Completely reversible, no left or rights required Speed prong allows anchor to be "set" then nailed 18 gauge galvanized steel Size: 4-1/2"