307-847, 3M, 3M Cold Shrink Tubing, Black 20.9mm Sleeve Dia. x 203.2mm Length 2:1 Ratio, 8420 Series, Brand 3M, Sleeve Diameter 20.9mm, Colour Black, Shrunk Diameter 2.54mm 3M Cold Shrink Tubing, Black 20.9mm Sleeve Dia. x 203.2mm Length 2:1 Ratio, 8420 Series