Labs Glass Rectangular Block; 75mm X 50mm X 18mm Size

EISCO Rectangular Refraction Block, 3" (75mm) x 2" (50mm) x 0.7" (18mm) - Optically Worked Glass - Slightly Beveled Edges - Excellent for Physics Experiments & Photography

MEETOOT Set of 10pcs Screw Mini Bulb 2.5V and 5pcs E10 Mini Bulb Holder Black Plastic Pure Brass Lamp Bases Student Experiment Lighting DIY Accessories Screw Type Bulb Socket

WGGE WG-026 10 Pieces and 5 Colors Test Lead Set & Alligator Clips,20.5 inches / 22 AWG Copper Wire. The Clips soldered and Stamping to The Wires. (1 Pack)