3M Medium-Wall, Flame-Retardant Cable Sleeve MDT-0400-48A, Red, #12 -#6 AWGGeneral Information Brand 3M Product Type Heat Shrink MDT Tubing Type Heavy Wall Country Of Origin United States Sold As Case Lead Time 2 days California Residents Proposition 65 Warning Dimensions and Specifications Cable Size Range 12 6 AWG Expanded Inner Diameter 0. 4 in Expanded Inner Diameter (Metric) 10. 2 mm Inner Diameter After Shrink (Imperial) 0. 13 in Inner Diameter After Shrink (Metric) 3. 4 mm Inner Diameter Before Shrink (Imperial) 0. 4