5-Piece Low-Friction Single Plastic Pulley Set, 50mm Diameter Included_Stopper this 22 SWG bare copper

this 22 SWG bare copper wire on a 250g reel runs about 225 feet — the workhorse fine gauge of the line

pairing with a solar cell to demonstrate the light-electrical-light energy chain during photovoltaic experiments

Two independent output channels on this compact AC/DC power supply deliver six selectable voltages up to 12V at 500 mA each

this fan-shaped nylon brush rides a twisted stainless steel handle flexible enough to bend around difficult interior angles

5-Piece Low-Friction Single Plastic Pulley Set, 50mm Diameter Included_Stopper this 22 SWG bare copperFive 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.