My analysis of these biscuits & plugs showed that they are truly exceptional in the industrial hardware category .These Hillman Group 58151 8 Inch (4 Pack) provide a reliable and secure solution for any industrial and scientific project. The fit and finish of these biscuits are top-notch ensuring a tight and long-lasting connection. The only downside is that the pack contains only four pieces, which may not be sufficient for larger projects. Nonetheless, these biscuits & plugs deliver outstanding performance for various industrial uses..