TEE CSST 3/4"X3/4"X1/2" by PRO-FLEX MfrPartNo PFTE-CCB6 Used for the continuation of a run of CSST Works with CSST (Ace nos. 4365938 or 4365946) Used to branch off a new run of CSST 3/4" x 3/4" x 1/2" "PRO-FLEX" CSST TEE