Slip-joint die-cast nut with washers. Chrome-plated finish. Bagged. No. 915DK: 1-1/4" x 1-1/4" No. 916DK: 1-1/2" x 1-1/4" No. 917DK: 1-1/2" x 1-3/8" No. 918DK: 1-1/2" x 1-1/2" No. 919DK: 2" x 2"