HAMILTON, N.J. — NKF Capital Markets has brokered the $50.5 million sale of a two-building office portfolio in Hamilton. The two net-leased properties are located at 600 and 700 Horizon Drive. The 600 Horizon building is leased to Verizon Communications and 700 Horizon is leased to AAA. Steven Schultz, Kevin Welsh, Steve Tolkach, Tony Georgiev and Brian Schulz of NKF represented the seller, Mack-Cali Realty, in the transaction. The buyer was undisclosed.