IDEAL, Heat Shrinkable Tube, Thermo-Shrink, Thin-Wall, Shrink Ratio: 2:1, Inside Diameter: 1/2 IN, Thickness: 026 IN, Length: 4 FT, Volume Resistivity: 1014 OHM CM For ASTM D 876 Test Method, Dielectric Strength: ASTM D 150, 20 KV/MM, Continuous Operating Temperature: -55 To 125 DEG C, Minimum Shrink Temperature: 70 DEG C, Heat Shock: UL 224, No Cracking (250 DEG C/4 HR), Cable Range: 4 - 1 AWG, Nominal Recoveredi.d. (max.): 0.252 IN, Expanded I.d. (min.): 0.539, Elongation At Break: 600 PCT ASTM D 638, Elongation Of Break After Aging: 350 PCT For UL 224 Test Method, Cold Bend Test (-55°c/4 Hours): No Cracking For UL 224 Test Method, Copper Corrosion: Pass For UL 224 Test Method, Chemical Resistance: Pass For UL 224 Test Method, Longitudinal Shrinkage: 0 Plus Or Minus 5 PCT For UL 224 Test Method, Eccentricity: 30 PCT For UL 224 Test Method, Normal Size: 1/2 IN, Package: Disk