TOGU ANSI GRADE 3 Heavy Duty Front Door Entry Door lockset Lever Door handle for Bedroom,Bath and Passage,Satin Nickel TOGU entry door lever provide thick brass 6-pin mechanism cylinders to ensures your house is always protected by an anti-theft locked door.The interior parts are made of heavy gauge cold rolled steel.ANSI/BHMA Grade 3 Certified,guarantee for over 200,000 cycles. All machined from top grade solid Zinc alloy.Passing 72-hour spray test while the industrial standard is 24-hours,our products offers a longer life span for 5-10 years in normal conditions. Suitable for most existing,standard pre-drilled doors,features an adjustable latch 2-3/8"-2-3/4" to fit 1-3/8"-1-3/4" thick doors. Door levers are reversible to fit right or left handed doors,internal labor-saving mechanism design allows the levers work easy and smooth. Instructions for installation and screws included.If you have any problem with the product,feel feel to contact us,Refund or Replacement is not a problem!