Item specifics: Material: Polyolefin Minimum shrinkage temperature: 70 degC Maximum shrinkage temperature: max. 110 degC Operating temperature: -55 degC to +125 degC Tensile strength: 10.4 MPa Insulation strength: 15 kV/mm Flame retardant: flame retardant Quantity:328Pcs This listing is for a factory boxed assortment of 328 pieces of Polyolefin Heat Shrink Tubing. This product has a 2:1 shrink ratio and is both UL & CSA certified for up to 600V @125 Degree Centigrade. The Compact translucent storage plastic bag 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. Note: The plastic box is NOT Included Contents are as follows: 120pcs x 1.0 x 40mm ( Quantity x Supplied internal diameter x Single length ) 60pcs x 2.0 x 40mm 32pcs x 3.0 x 40mm 32pcs x 4.0 x 40mm 32pcs x 6.0 x 40mm 20pcs x 8.0 x 80mm 16pcs x 10.0 x 80mm 16pcs x 14.0 x 80mm includes:1x 328Pcs(8 sizes) 2:1 Heat Shrink Tubing(Box NOT included)