Best 41B Series Padlock 2 inch Non-Key Retained 47 41B 2" Brass Body Padlock 26 Padlock Case Machined from solid extruded brass. Standard finish is 626 satin chromium plated. The shackle locks at both heel and toe. The length of shackle opening is measured from top of case to inside of shackle when padlock is locked. 2" Shackle Non-Key Retained Width– 1 15⁄16" Length– 2 1⁄16" Thickness– 7⁄8" Stainless Steel Shackle ASTM F883– Meets Grade 3 with stainless steel shackle.