Wilwood 4 Piston Lug Mount Forged Billet Dynalite Caliper (Grey) 1.38"/1.38" Bore Size, 0.38" Disc Width, 7112 Pad Plate (WB120-16743)FORGED DYNALITE INTERNAL 1. 38" 1. 38" Bore Size, 0. 38" Disc Width, 7112 Pad Plate Part Number: WB120 16743 The Forged Billet Dynalite Internal is the next generation enhancement of the venerable Forged Dynalite series calipers. Designed with a single split bridge and spacer less design to enhance strength and appearance. These latest applied developments and innovations in caliper design and manufacturing processes have resulted in substantial