Guard Security 622 Solid Brass Padlock with 1" Standard Shackle - Amazon.com
Guard Security 623LS Solid Brass Padlock with 1-1/4-Inch Long Shackle - Amazon.com
Commando Lock Total Guard 1-3/4 in. Bolt Cutter Proof High Security Keyed Padlock W 1-1/8 in. Shackle Weather Resistant Military-Grade 5001 - The Home Depot