Stanley Hardware S828-228 CD8823 Shrouded Laminated Steel Padlock Astm Security Grade 4 Laminated Steel Body, Hardened Steel End Caps And Recessed Rivets, Protects Lock From Attacks Hardened Steel Shackle Resists Sawing And Cutting Attacks ASTM security grade 4 Laminated steel body with hardened steel end caps and recessed rivets to protect lock from attacks Patented keyway cover protects against drilling Dual stainless steel ball-bearings resist pry attacks Commercial 6 pin cylinder with anti pick pins