The Double-Alpha Primer Pickup Tubes are made of the highest quality aluminum, produced using custom-made extrusion tools and tightly controlled for accuracy and finish. Close attention is paid to the consistency of the internal and external chamfering to ensure optimal feeding. The matt-finish anodizing makes identifying the primer size immediate, while giving these tubes a striking attractive look. Blue Anodized pipe and end pieces for LARGE Primers, Red for SMALL.Much testing and development went into the plastic pickup and drop ends of these tubes. The Pick-up end is engineered to provide a more ergonomic shape, making it much more comfortable to grip in one's hand. A very noticeable improvement for those loading many tubes in one session. The wider, larger finger-support area, with its smooth support ring, prevents hand fatigue and cramping, as you do not need to close your fingers as tightly, like you do with other tubes.The tip was redesigned as well, and includes two "teeth"...