Product Description 3M 74 Tape is a 0.5-mil polyester film with rubberthermosetting adhesive.•0.5-mil polyester film backing•Rubber thermosetting adhesive•Supplied on 3 inch coresLike all 3M insulating tapes, 3M 74 Tape is available instandard and custom widths and lengths. Standard lengthis 72 yards.•Widths from 1/4” to 15.5•Longer lengths up to several times normal length,dependent upon width. Check with Customer Service.Applications3M 74 Tape is conformable; provides good electricalstrength for coil applications where space is at apremium.