star lock washers, internal tooth, zinc plated steel, small drawer assortment. Tray dimensions: (13-3/8″w x 9-1/4″d x 2″h). # 4, item refill # 00718-200, # 12, item refill # 00705-100, 7/16, item refill # 00709-50, # 6, item refill # 00702-200, 1/4, item refill # 00706-100, 1/2, item refill # 00733-50, # 8, item refill # 00703-200, 5/16, item refill # 00707-50, 5/8, item refill # 00735-50, # 10, item refill # 00704-100, 3/8, item refill # 00708-50.