Opti-Quad Posterior Dual Arch Metal Reinforced Bite Tray, 50/Box. Designed to make distortion-free impressions easier than ever. Ideal for highly detailed impressions. Features an integrated mesh that prevents material loss, while extending to the handle to ensure the accurate impression of up to four teeth. Each impression tray features low sidewalls, a thinner distal bar, and an adjustable arch to match any arch size.