Single Pulley with 2 Hooks, Heavy Duty Frame, 4.25 x 2" Subcategory_Energy Transfer Single D-cell holder mounted on

Single D-cell holder mounted on a base with 4mm sockets

Half-size digestive system model fits smaller class benches while preserving the full esophagus-to-rectum path and accessory organ anatomy in two removable parts

Polystyrene electrolyzer with a transparent cone-shaped cup over a banana-socket base

Ten-pack of tungsten-carbide bimetallic strips

and electrical circuit experiments in the classroom

Single Pulley with 2 Hooks, Heavy Duty Frame, 4.25 x 2" Subcategory_Energy Transfer Single D-cell holder mounted onAluminum bodied single pulley in a heavy duty 4. 25 inch metal frame with hooks at both ends and a centered 2 inch wheel, configurable as fixed or movable in compound setups.