SOLID ROD SHAFT KIMAX solid stirring rods with rounded ends Designed from Federal Specification NNN-R-560, Type I requirements Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements Diameter (mm) : 6 Length (mm) : 250 Shelf-Pack Qty : 100 Case Qty : 600