Stamped Valve Tags - Brass. Brand Name: Brady®. Type: Numbered Valve Tags. Special Features: Consecutive Numbers. Standard: ASTM D 1593. Color: Black on Brass. Legend: GAS 376-400. Language: English. Material: Brady B-907 Brass. Thickness: 0.04 IN. Diameter: 1.5 IN. Indoor or Outdoor Use: Outdoor Use. Attachment Type: Holes. Shape: Circle. Number of Printed Sides: 1. Resistance Properties: Chemical-Resistant. Hole Inside Diameter (in/ft/yd): 0.188 IN. Number Character Height (in/ft/yd): 0.5 IN. Text Character Height (in/ft/yd): 0.25 IN. Print Technology: Stamped.