The traditional choice.
Brass Finish: The traditional choice. Smooth action and heavy. Low static build up.
6061-T6 Aluminum Finish: The choice for individuals stacking synthetic or heavy static materials. Smooth action and light. Very low static build up.
400 Grade Stainless Steel Finish: The heavyweight of stackers. Smooth action and very stout. Low static buildup. Best for stacking heavy materials.