The Plumber's Choice 4 in. Hinged Split Ring Pipe Hanger in Galvanized Malleable Iron 04HSHG - The Home Depot
NVENT CADDY, Stand Off, 1/2 in Pipe Size (In.), Split Ring Hanger - 1RVD4|4550050EG - Grainger
Highcraft Hinged Split Ring Pipe Hanger, 1-1/2 in. Galvanized Iron Extension Hanger with 3/8 in. Threaded Rod Fitting for Suspending Tubing (5 Pack) - Walmart.com
NVENT CADDY, Stand Off, 4 in Pipe Size (In.), Split Ring Hanger - 1RVE6|4550400PL - Grainger
FNW® Figure 7001S 1-1/2 in. Stainless Steel Split Ring Hanger - 7001SJ - Ferguson