Security Design: The puck padlock design protects against bolt cutters, no exposed shackle to cut or saw. Provides maximum security against drilling, sawing and prying. Key retaining safeguard ensures padlock is not left unlocked. High Qulity Material: The hidden shackle padlock is made of #45 Steel with the chrome surface, this padlock is impossible to cut or pry, the chrome surface is rust and temperature resistant which can withstand any weather, no spring to rust or jam. Widely Used: The hidden shackle keyed alike padlocks provide ideal security for your van, trailers, gates, trucks, garden shed, warehouse, shipping container, factory, house. Tip: Please carefully read whether the size of the puck lock fits your hasp of the lock before purchasing. Size: The Length is 9-1/16 in. (23cm), Lock body diameter is 2-7/8 in(73 mm), 3/8 in(10mm). carriage bolts recommended for installation (bolts included). If puck locks heavy duty has any issue, please contact us in time. Easy to Use: Open the parcel and you will get 1 piece hidden shackle van padlock with keys. If there is problem in the use of the puck locks, please contact us first, we will reply to you within 8 hours and help you solve it until you are satisfied. Heavy Duty Hidden Shackle Lock, Hidden Shackle Padlocks Keyed Alike Trailer Puck Padlocks with Enlarged Lock for Vans