The door lock pull ring has a curved, smooth design and does not hurt the hand. It rotates 360 degrees and the switch is smooth. High quality 304 stainless steel, no fading or rusting. Exquisite craftsmanship design, multi-layered craftsmanship, stable corrosion resistance. Anti-rust coating, internal lock body plaid design, long-term use is not easy to appear faded color, rust and aging. Anti-pressure lock body, thick impact resistance of the deflector, widening of the locking tab and more anti-theft. Thickened base, can be directly screwed to the base screw, strong bearing capacity, stable reinforcement. Suitable for door thickness: about 35mm or more. Scope of application: all kinds of wood doors / steel-wood doors. Name: Invisible door lock Color: Brushed steel Size: Diameter of pull ring: 74mm; Hole distance: 38 mm. Material: Stainless steel High quality 304 stainless steel. Exquisite craftsmanship design, multi-layer craftsmanship, stable corrosion resistance. Anti-rust coating, internal lock body plaid design, long-term use is not easy to appear discolored color, rust and aging. Anti-pressure lock body, impact resistance of a thick deflector, widening of the locking tab and more anti-theft. Thickened base, can be directly screwed to the base screw, strong bearing capacity, stable reinforcement. Suitable for door thickness: about 35mm or more. Scope of application: all kinds of wood doors / steel-wood doors. GUARANTEE: If you have any problem with our product which you received, you can email us anytime. We'll get back to you instantly and help you resolve your issue..Items from Sheng Xinshun's shop