Singularity Ccomputers Protium 2.0 Reservoir Retention Rings Black

SC Protium 2.0 uses a retention ring design instead of threaded caps. This allows for 360-degree rotation of the reservoir caps, and it is far more durable than caps which thread onto the inside of the reservoir tube. They are built from CNC Machined Anodized Aluminum and do not contact the fluid. They are compatible with Protium 2.0 Reservoirs, D5/Reservoir Combos and backwards compatible with Protium 1.0.