Jonard Tools TTBW-158 Steel Barrel Fastener Plunger Tool for Water Utility Fasteners with 0.158” Inside Diameter: Amazon.com: Tools & Home Improvement
Plunger Style Barrel Locks and Keys - Electric
Barrel Lock & Key Systems | Utility Meter Barrel Locks for Gas, Electric & Water | Highfield
Barrel Lock Plunger Key Size #6 — Primus Cable
Jonard Tools TTB-6 Barrel Lock Plunger Key Terminal Tool Kit for Channel LK03029817 and Highfield 93180775-S CATV Barrel Fasteners in the Specialty Automotive Hand Tools department at Lowes.com