New Old Stock Pyrex USA Made 5660 Class A 25ml Volumetric Flask with Glass Stopper 2.5" Chucks size or angle but these

size or angle but these came mixed in with a large groupe of Grobet Countersinks from a long closed Grobet distributor

The chuck is shiny and new but we could not get the lighting right

Ring-type knurled lock nut for quick and sure locking

straight cuts in confined areas

New Old Stock Pyrex USA Made 5660 Class A 25ml Volumetric Flask with Glass Stopper 2.5" Chucks size or angle but theseNew Old Stock ( Made in 1994) Pyrex USA Made 5660 Class A 25ml Volumetric Flask with Glass Stopper. The flasks have been in warehouse storage for more than 30 years and may have tiny scuffs or light scratches . Includes volumetric flask and stopper. Key Features Get permanent legibility and accuracy with etched red graduation Volumetric flasks are constructed of borosilicate glass Volumetric flask features 25 mL capacity with 0. 03 mL tolerance