Bron BT-257R 2" x 60 YD 9ml Red Cloth Industrial Grade Duct Tape. BT-257 is a 9 mil duct tape - and a staple for any toolbox. Whether you're patching a leak or making general purpose repairs, this reliable duct tape is a great solution. BT-257 has proven successful in construction industries for holding poly sheeting in temporary work environments and pipe wrapping. Available in red or silver.