The 301A034-25-0 from TE Connectivity / Raychem Brand is black color T shape heat shrink boot with shell size 34. This heat shrink boot has 1.060" (26.92mm) to 0.531" (13.49mm) diameters of all three legs. This is elastomer, semi-rigid, irradiated heat shrink boot with length of 4.728" (120.09mm). Operating temperature range is from -75 to 150 °C ( -103 to 302 °F ).