1/2 inch Drive Spud Wrench - Five Step Radiator Valve Trails Lugs Nipples
Radiator Spud Wrench 5 Steps - 1/2in.Dr
Jones Stephens Silver Combo Wrench Set for Radiator Spud Key and Wrench, 6-Piece, 1/2-in-2-in Sizes, Durable Malleable Iron in the Plumbing Wrenches & Specialty Tools department at Lowes.com