Penn-Del Lock Inc. Locksmiths Penn-Del Lock Inc. Visit Website Request Info 37385 Rehoboth Ave. Ext. Unit 4 Rehoboth Beach, DE 19971 (302) 227-6192 About Map About Penn-Del Lock Inc. has been servicing Sussex County since 1972. We provide locksmith services, and safe sales/service to commercial, industrial, and residential customers. Visit our shop in Rehoboth What's Nearby? Distance: 5 10 15 20 25 50 mi.