Chance® has introduced new Wireholder jib extensions to fit round (3 inch and 41/2 inch) and square-corner (4 inch x 4 inch and 3 3/8inch x 5 inch) truck jibs. Tested per ASTM F711 and OSHA, each unit features a 3inch-diameter heavy-wall orange Epoxiglas® pole with 31 inches of clear glass. With a 300-lb. rated working load, each unit weighs 27 to 29 lb. and has a large swivel-type roller wireholder with a 21/2-inch x 3 3/8-inch opening.