4-Stroke Gasoline Hand-Crank Engine Model, 13.75" Science at Home_Life Science 5-inch diameter

5-inch diameter

Six-piece polypropylene beaker set spans 50mL to 2000mL for complete classroom and lab volumetric workflows without glass breakage risk

Demonstrates the full light-to-electricity-to-motion chain through a solar cell

Borosilicate 3

Needle valve and flame stabilizer deliver fine flame control on this liquid propane Bunsen burner for precision chemistry and biology heating work

4-Stroke Gasoline Hand-Crank Engine Model, 13.75" Science at Home_Life Science 5-inch diameterHand cranked 4 stroke gasoline engine model at 13. 75 inches tall with visible crankshaft, camshaft, valves, rocker arms, push rods, and an ignition light that fires on compression.