2-3/4" backset passage spring latch designed for traditional doorknobs with a square spindle shaft. The latch will accommodate both the standard & common 3/8" - 20 TPI square shaft spindles found on most old-style doorknobs, & will also work with thicker 5/16" sized spindles as well. The well-made & durable spring loaded mechanism provides a secure & smooth operation when used. The latch is designed for a passage (non locking) function on doors. Great for vintage antique door knobs, or reproduction door knobs. Available in oil rubbed bronze, brushed nickel, & polished nickel finishes.,Hardwick & Sons is pleased to offer vintage-style hardware for the many people who desire to fashion their homes with charm, quality, & style. The traditional-style hardware that we showcase are true & faithful reproductions of classic hardware pieces found in the many homes from across America throughout the past century., WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov,WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov/wood Spring Latch for Doors (Passage) ~ 2-3/4" Backset