Car Engine Oil Oil Quality Comparator Can Be Flipped Acrylic Glass Demonstration Stand Oil Viscosity Test Tool Comparator

Model1:2Hole oil quality comparator

Model2:3Hole oil quality comparator

Model3:4Hole oil quality comparator

Model4:5Hole oil quality comparator

Model5:6Hole oil quality comparator

Mode6l:7Hole oil quality comparator

Model7:3Hole reversible oil quality comparator

Model8:4Hole reversible oil quality comparator

Model9:5Hole reversible oil quality comparator

Model10:6Hole reversible oil quality comparator

Model11:7Hole reversible oil quality comparator

Model12:3Oil quality comparator with enlarged hole and inverted hole

Model13:5Oil quality comparator with enlarged hole and inverted hole