Item specifics: Color: Black Length: 100mm This listing is for a factory boxed assortment of 53 100mm pieces of Black Dual-Wall Adhesive-Lined Heat Shrink Tubing. This product has a 3:1 shrink ratio and is both UL & CSA certified for up to 600V @125 Degree Centigrade. Product is also RoHS Compliant. The Compact translucent storage box with molded catch to prevent spillage as well as compartments labeled with size makes this a handy item for the Technician or Hobbyist work bench or van.Contents are as follows: 16pcs 100mm lengths φ3.2mm 12pcs 100mm lengths φ4.8mm 9pcs 100mm lengths φ6.4mm 5pcs 100mm lengths φ9.5mm 8pcs 100mm lengths φ12.7mm 3pcs 100mm lengths φ19.1mmPlease note: All Tubing is measured I.D.(Inside diameter) when round.Package Included: 1x 53Pcs(6 Sizes) Dual-Wall 3:1 Black Adhesive Lined Heat Shrink Tubing 1x Storage box