Scotch® Varnished Cambric Tape 2520, 1-1/2 in x 36 yd, Yellow, 6 rolls/carton, 24 rolls/Case. Scotch® Tape 2520 is an 8 mil thick, highly conformable, premium grade tape that's suitable for bus bars, motor leads and service drop connections. It withstands temperatures up to 221 °F (105 °C).