Rectangular Refraction Block, 3" (75mm) x 2" (50mm) x 0.7" (18mm) - Acrylic - Slightly Beveled Edges - Excellent for Physics Experiments & Photography - Eisco Labs sold2026 Drinking alkaline water helps balance

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no extra space inside for better grip and more safety

The remote included has 18 buttons with multiple color changing mode selections

HIGH ENERGY EFFICIENCY The inside wire is made of pure copper that has high ductility and low energy consumption

Rectangular Refraction Block, 3" (75mm) x 2" (50mm) x 0.7" (18mm) - Acrylic - Slightly Beveled Edges - Excellent for Physics Experiments & Photography - Eisco Labs sold2026 Drinking alkaline water helps balanceRectangular Refraction Block, 3" (75mm) x 2" (50mm) x 0. 7" (18mm) Acrylic Slightly Beveled Edges Excellent for Physics Experiments & Photography Eisco Labs Product Features RECTANGULAR BLOCK Rectangular block made from high quality acrylic 3" LENGTH Block measures 3" long, 1. 5" wide and is 0. 7" thick PHYSICS EXPERIMENTS Excellent for physics classrooms. Ideal for a variety of experiments in refraction and reflection PHOTOGRAPHY Great for