Southwire - Topaz Anti-Short Bushings promote safety by protecting wires passing through edges of flexible metal conduit cut in the field, insulating against damage from sharp edges to avoid short circuits and rework. Plastic construction, pre-packaged in poly bags or sold in bulk and confidently backed by the Southwire - Topaz lifetime guarantee. Southwire - Topaz Anti-Short Bushing, 14/4, 6/1, 4/1 AWG AC Cable Size, 3/8 in Trade, Plastic, 0.66 in Dia x 0.67 in H Dimensions