Morris 60116 Brown Professional Grade Vinyl Electrical Tape, 7 mil, 66' Length, 3/4" Width 7 Mil Professional Grade Vinyl Electrical Tape 3/4" X 66' - All Weather Professional Grade Splicing Tape used as Primary Insulation up to 600V and as a Protective Outer Jacket up to 69KV. 7 Mil Professional Grade Vinyl Electrical Tape is 3/4 X 66 Ft X 7 Mil Comparable To 3M 33+ and 35 Use as Primary Insulation up to 600V Use as Protective Outer Jacket up to 69KV