Specifications Comes with 560pcs heat shrink tube assorted in plastic box, 5 colors( Yellow, Blue, Black,Green, Red), 12 Specifications , satisfied for your different need Length: 1 13/16″, Internal Diameter: 1/24″(90 Pcs), 1/16″(70 Pcs), 1/12″(70 Pcs), 1/10″ (50 Pcs), 1/8″(50 Pcs), 1/7*(50 Pcs), 1/6″(50 Pcs), 1/5″(30 Pcs), 1/4″(30 Pcs), 2/7*(25 Pcs), 2/5″(25 Pcs), 1/2*(20 Pcs) Shrink up to 1/2 of the original diameter. Minimum Shrinkage Temp: 70°C Full Shrinkage Temp: 110°C maximum Operating Temperature: -55°C to 125°C