Description: Rest assured with the peace of mind that Brinks door hardware is protecting your home. A trusted name in security since 1859, Brinks two-pack of Bell knobs are pick and bump resistant and include drill resistant pins and an anti-pry shields. They meet ANSI Grade 3 standards, fit all doors 1-3/8" to 1-3/4" thick and have 4-way adjustable latches that fit 2-3/8" or 2-3/4" backsets. The knobs are keyed alike for your convenience. The keyed entry function is best for front, back and side doors.