The AndyMark Hex Molded Spacer 5mm Hex Bore, 1.000in. Length is an essential component for maintaining the stability of mechanical assemblies. Designed to fit common shaft types, this spacer is versatile enough for use with both hex and round shafts, as well as bolts. Constructed from durable black polycarbonate, it offers resistance to cracking under stress, making it suitable for various applications. This spacer is particularly beneficial for projects requiring precise spacing solutions.