https://www.ebay.com/sch/i.html?_nkw=3M+Black+Heat+Shrink+Tubing+Pack+Of+75+&_sacat=0&_dmd=2

3M Black Heat Shrink Tubing (Pack Of 75)

Regular price
$346.00
Sale price
$246.00

Heat Shrink Tubing, Material Flexible Polyolefin, Thin, Temp. Range -67 Degrees to 230 Degrees F, Shrink Ratio 3:1, Black, Length 4 ft, I.D. Before Shrinking 0.500 In, I.D. After Shrinking 0.160 In, Wall Thickness After Shrinking 0.070 In, Max. Voltage 600V, Features Flame Retardant, Standards MIL-DTL-23053/4, Class 3; UL Recognized (No. E-157227), Package Quantity 75