Simpson Strong-Tie DTT2Z Deck Post Connector. A safe, cost-effective way to attach deck-railing posts to the deck framing. The connection is stronger than typical through-bolt installations and complies with IRC and IBC code requirements regarding handrail and guardrail post connections for decks. Load rated as a holdown for light-duty shearwalls and braced wall panel applications, fastens easily to a single 2x joist or stud, etc.