Brass Slotted Mass and Hanger Set, 250g Total Mixed Sizes Subcategory_Centrifuges providing waterproof chemical-resistant splash protection

providing waterproof chemical-resistant splash protection with a smooth nonporous surface that wipes clean

Stackable 300mm red 4mm lead rated to 12A with nickel-plated split-hollow safety plugs at both ends

Small 4-inch solar cell on a 4mm-terminal panel

the flywheel light enough to drive by breath for hands-on reciprocating-engine study

Brass Slotted Mass and Hanger Set, 250g Total Mixed Sizes Subcategory_Centrifuges providing waterproof chemical-resistant splash protectionBrass twelve piece slotted mass set pairing a 50 gram hanger with nine 20 gram, two 5 gram, and one 10 gram discs to total 250 grams for fine grained physics force and balance experiments.