3M Heat Shrink Thin-Wall Tubing FP-301VW-3-Black-50`: 50 ft spoollength a+|0|1666972775294 1" square drive bi-hexagonal socket:

1" square drive bi-hexagonal socket: 80mm

1/4" square drive bi-hexagon socket: 4

Back-Mounted

If you're not sure

3M Heat Shrink Thin-Wall Tubing FP-301VW-3-Black-50`: 50 ft spoollength a+|0|1666972775294 1" square drive bi-hexagonal socket:General Information Brand 3M Heat Shrink Type Single Wall Polyolefin Heat Shrink Tubing Tubing Type Single Wall (Thin) Country Of Origin United States Lead Time 2 days California Residents Proposition 65 Warning Dimensions and Specifications Expanded Inner Diameter 3 in Expanded Inner Diameter (Metric) 76. 2 mm Inner Diameter After Shrink (Imperial) 1. 5 in Inner Diameter After Shrink (Metric) 38. 1 mm Inner Diameter Before Shrink (Imperial) 3 in