【Safe & Durable】​​ This ​​door knob with lock​​ offers dual-side security, locking via knob on one side and key on the other. Crafted with a durable stainless steel handle and reinforced steel internal structure, this ​​doorknob with lock and key​​ ensures long-lasting performance. Its anti-collision cylinder provides added security for ​​door knob exterior​​ use 【Universal Size Compatibility】​​ This versatile ​​door knob with key​​ fits doors with 2-3/8" (60 mm) or 2-3/4" (70 mm) backsets. The ​​door lock with key​​ accommodates door thicknesses from 1-3/8" (35 mm) to 1-3/4" (44 mm), making it an ideal ​​locking door knob for bedroom​​ doors and a reliable ​​lock door knob​​ 【Premium Material】​​ Meet ANSI Grade 3 standards, this ​​room lock for bedroom​​ is tested over 250,000 cycles. These ​​door knobs with lock and key​​ feature a stainless steel handle, premium brass mechanism, and include 3 keys. The satin nickel finish offers style and durability ​【Easy to Install】​​ This ​​keyed entry door knob​​ features a ball three-bar lock mechanism for straightforward DIY installation. Suitable for left or right-handed doors, this ​​lock for door bedroom​​ comes with clear instructions, making the ​​keyed door knob​​ simple to set up without professional help 【Versatile Application】​​ Perfect ​​door lock bedroom​​ solution for bedrooms, bathrooms, offices, and closets. This ​​door knob with lock and key​​ prevents unauthorized access and offers external key locking. The ​​locking door knob with key​​ ensures privacy, while these ​​door locks with keys​​ provide flexible security as ​​key door knob​​ or ​​bedroom door knobs with lock and key​​