HEAVY DUTY STEEL LOCKS: These locks are made of hardened steel to keep your contents safe and the bad guys out. Each lock weighs a heavy 850g and measures L10 x W2.4 x H6.5cm (3.94 x 0.94 x 2.56 inches). The shackles measure 12 mm in diameter. When locked the gap on each lock measures L3.9cm x H2cm (1.54 x 0.79 inches). This makes the padlocks the perfect size for most latches. ULTIMATE SECURITY: Weighing at a mighty 850g these locks are super tough. With their hardened, solid steel bodies it makes them high strength and extremely durable. They each have a rotating shackle/closed shackle making the locks are anti-drill and anti-saw. The locks have been designed with security in mind leaving no weak spots. 8 KEYS INCLUDED: Each of the padlocks in this set come with 4 keys. You can never have enough spares. Keep a few in a safe place so you are covered if you lose one. With 4 keys per padlock, you will have enough to give to close friends and family members. Keys can only be removed from the locks when they are in the locked position. LOCKUP AND LEAVE: Given the unique D shape of the locks it makes them perfect for securing industrial 20ft and 40ft containers as well as gates, garages, caravans and storage units. Also being very sturdy the locks can be used when locking up the chain on your motorbikes. DESIGNED FOR LIFE: Every product in our collection is built with purpose, blending function and style. Our thoughtfully crafted designs ensure lasting reliability and convenience when needed, ideal for any occasion.