B-Lok Divided Tray, Size B (Ritter) 13-3/8' x 9-5/8' x 7/8', Midnight Blue. The tray holds and organizes 12 instruments for procedures and sterilizations. The tray has wide edges and non-slip feet for stability. The tray features Gray Insti-Grip to hold instruments in place. The tray can be disinfected with surface cleaner or by washing, and is autoclavable up to 136C or 277F Single tray