SEA-LECT Designs Side Mount Rod Holder Kit - White K325121-9 Transform your kayak into a fishing machine. Features: Made from injection-molded ABS. Closed end. Overall length: 11 11/16 in Opening diameter: 1 3/4 in Spacing between parallel holes for fasteners: 2 1/2 in Spacing between two parallel holes and top hole for fasteners: 2 5/8 in Recommended fastener: Side mount rod holder - white (1) 10-32 x 1-1/4" Panhead Screws (2) 10-32 Nyloc nut (2) #10 Flat washer (2).