Perko Top Mnt Rowlock Sockets Chrome Pr 1185-DP0-CHR by Perko $25.22 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Perko Top Mount Rowlock Sockets Pair #9-1185DP0CHR Chrome Plated Black with plastic bearings Size: 2-7/8"L x 1-1/8"W x 1-1/8"D Screw size is #10.