Ultra Hardware 43977 Ultra Security Tulip Knob Lockset Privacy, Stainless Steel QUALITY: The Ultra Security Tulip Knob Lockset is built from quality stainless steel. The design easily fits large or small hands for a comfortable grip, and the smooth mechanism means you dont have to strain your wrist when turning the knob. WALLET FRIENDLY: Get the most out of your doorknob without breaking the bank. The Ultra Security door knob is designed to give you all the features you need in an inexpensive solution, without sacrificing any quality. INTERIOR USE: Perfect for bedrooms and bathrooms, this door knob and lock combo will fit any door from 1-3/8 to 1-3/4 thick. Guard your privacy with the grade 3 security, 2-way radius latch. EMERGENCY UNLOCK: If you or your child has ever locked everyone out of the bathroom, then you know how problematic that can be. Luckily, with the Ultra Security lock, you can unlock doors in an emergency by twisting a mini screwdriver inside the pinhole. SPECIFICATIONS: The Ultra Security Tulip Knob Lockset by Ultra Hardware gives you all the features you need without breaking the bank. Comes with a 25 year warranty, and features grade 3 security, two-way radius latch, and fits most interior doors.