Kwikset Satin Chrome Delta Entry Door Lever with SmartKeyFor use with exterior entry door. Entry lever is reversible for right or left hand door swing. Grade 3 security. Door locks and unlocks with key from exterior or turn button on interior. SmartKey Security protects against advanced break in techniques and allows you to re key your lock yourself in seconds. Round cornered adjustable steel latch fits both 2 3 8 In. and 2 3 4 In. backsets. Metal snap on collar for drive in. Lifetime mechanical warranty.