5-Piece Low-Friction Single Plastic Pulley Set, 50mm Diameter Entomology & Zoology_Entomology Supplies Stabilizer-free Bunsen burner runs on

Stabilizer-free Bunsen burner runs on natural gas for routine heating in chemistry and biology classroom laboratories

with 4mm sockets that connect directly to signal generators and other audio sources for sound-wave demonstrations

Variety pack to help with experiment of contrasting resistances and temperature

with a spacer and keepers in a 3

5-Piece Low-Friction Single Plastic Pulley Set, 50mm Diameter Entomology & Zoology_Entomology Supplies Stabilizer-free Bunsen burner runs onFive pulley set of single 50mm low friction plastic pulleys on open sided steel frames, letting students snap cord directly into place for faster classroom setup and teardown.