POWER INSTALLED SCREW ANCHORS AND RODS MACLEAN POWER SYSTEMS Power installed screw anchors consists of two main parts: cam action helix with straight hub, and 7-ft. anchor rod. Both parts must be ordered separately to make a complete unit. Hot dip galvanized. 1 3/8" sq. hub rated at 6,000 ft.-lbs. maximum torque. Rod includes eyenut. Items are priced each. Order helixes and rods separately. Desc.: 8" Twin Helix for 3/4" Rod, Ctn. Qty.: 25