WaterPik 011214-000 Master Tray #4 Medium Lower Full-Arch Impression Trays 12/Pk
#4 medium White Perforated Lower Full-Arch Plastic Impression Trays, Package of 12. Master tray trays are disposable impression trays with a reinforced cross-section to offer rigid metal tray performance for crowns, bridges and implants. X-shaped ribs in occlusal surface minimize contact with cusps and allow sufficient space for impression materials to flow around all tooth surfaces. Unique undercut slots and a peripheral locking rim provide unequaled material retention.