Walter Stern Solid Borosilicate Glass Ball, 1 mm dia

Glass Ball, 1 mm dia, Solid Borosilicate, 135000/lb Estimated Pieces, 2.23 g/cm3 Density, 510 to 568°C Cooling Temperature, 815°C Softening Temperature, Rods, Blown and Pressed Manufacturing Process, One Pound Plastic Jar Packaging