Features: Pure stainless material special for European market Rotate the handle freely in locked mode Adopt German DDN card plate, normally use for 200,000 times Super exquisite craftsmanship, never rusted or faded This product from cover, machine departs to MOTICE all part really adopt the stainless steel material to make machine components.Never fade! Door thickness request is no less than 3.5cm. Anti-dust, anti-moisture design, reasonable and safe. Luxurious, firm and elegant, without screws in the lock surface, five-latch mortise. Easy to change the batteries in the lock . U-design handle is the first choice, maximum protect body.