Attributes . All steel construction ensures mechanical protection for raceways; Available in 3/8 in. to 4 in. trade sizes; Dual saddle clamp ensures proper conduit and cable connection for raceway; Zinc plated for corrosion resistant installation; Tri-head screw/clamp design - connectors can be installed by using a slotted, Phillips or Robertson head screwdriver; Insulated throats on all DOUBLE BITE connectors provide maximum wire protection; Additional sizes available . Names