- Perfectray #4 Medium Lower Arch Impression Trays are made of high-quality, crystal-clear acrylic. - The tray's ergonomic handle makes them easy to seat and remove. - The perforations are specifically designed to lock the material into the tray and deliver exceptional retention. - Features: - Complete transparency for maximum visibility. - Ergonomic handles and finger rests. - Rigid construction that won't bend or break. **For further product information, please contact Chat Support**