Pith ball (pack)
Used in the following activities:
33 Packages of two aluminum-coated (Sargent-Welch WL1947) pith balls and 40 uncoated (Sargent-Welch WL-1945) pith ball.
Threads are tied in a loop on the end, about 10cm long.
Spares:
Uncoated (WL1945): 283
