1、This listing is for a factory boxed assortment of 180 pcs of heat shrink tubing. 2、This product has a 2:1 shrink ratio and is both UL &CSA certified for up to 600V @125 Degree Centigrade.Product is also RoHS Compliant. 3、The Compact translucent storage box with molded catch to prevent spillage as well as compartments labeled with size makes this a handy item for Technician or Hobbyist workbench or van. 4、125℃ of temperature endurance and 0.6KV of voltage endurance. 5、These tubes are all made of crosslinked polyethylene with W-1 grade of flame retardant ability. Features: This listing is for a factory boxed assortment of 180 pcs of heat shrink tubing. This product has a 2:1 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 Technician or Hobbyist workbench or van. 125℃ of temperature endurance and 0.6KV of voltage endurance. These tubes are all made of crosslinked polyethylene with W-1 grade of flame retardant ability.  Specification: Material:Crosslinked Polyethylene Flame Retardant Capacity:W-1 Temperature Endurance:125℃ Voltage Endurance: 0.6KV Color:Mixed Color Type: 30pcs 2.5x10cm Red 30pcs 2.5x10cm Yellow 30pcs 2.5x10cm Green 30pcs 3.0x10cm Red 30pcs 3.0x10cm Yellow 30pcs 3.0x10cm Green Package List: 180 x Heat Shrinking Tube