Based on my experience this shrink tubing is top notch for any industrial and scientific wiring and connecting project. It was easy to use and saved ME time and effort thanks to its shrinkability .The 350±5MM length width was perfect for my needs and I appreciated the durable material that won't melt or fall apart easily. However, it would be nice to have more color options to choose from. Overall, i highly recommend this product for any electrical project..