NEW DESIGN, NEW CONCEPT: Lock Body, shackle and keys of this U lock are made of 304 stainless steel. And all parts/components made of stainless steel 304 and even include a key ring. This lock does not contain any other materials but stainless steel. Rust and corrosion resistant completely. Can be used in corrosive sites or underwater.
This lock is manufactured by high-precision laser cutting machine. And the surface of the product is purely polished by hand
This U lock features a laminated stainless-steel lock body and shackle for maximum strength and corrosion resistance. Flat tumbler and dual stainless steel bolt locking mechanism provide maximum weather, pick and pry resistance.
Material of stainless steel 304 has excellent performance. It can work well at high and low temperatures.
STURDY AND LARGE LOCK: Lock Specifications as picture. Weight: each lock weighs 3.25 pounds.