1)quick drying stamp pad ink,can be washed easliy. 2)OEM order is welcome 3)ASTM D4236 test standard confirmed 4)without oil No.431 stamp pad ink1)quick drying stamp pad ink,can be washed easliy.2)OEM order is welcome3)ASTM D4236 test standard confirmed4)without oil 1pcs/color box ,12pcs/shr ink ,288pcs/carton5)40ml per bottle ,different colors :red ,blue,black,purple refill ink for stamp pad