Layers of the Earth | A Study of Earth's Structure | Introduction to Geology | Interactive Science Grade 8 | Children's Earth Sciences Books

White and Black PTFE Solid Rod 100mm Length Polytetrafluoroethylene Bar for DIY Craft Industrial Manufacturing (Black,Diameter 80mm)

3.000 (3 inch) x 11.75 inches Cast Nylon MD Plastic Round Rod Durable Plastic Versatile Use DIY Metalwork Mechanical Industrial-Grade Material

1.500 (1-1/2 inch) x 18 inches UHMW Polyethylene Round Rod Natural Durable Polyethylene Versatile Use DIY Metalwork Mechanical Industrial-Grade Material

1.000 (1 inch) x 36 inches (3 Pack) ABS Machine Grade Plastic Round Rod Black Durable Plastic Engineering Projects Workshop Fabrication Metal Restoration Industrial-Grade Metal

USA Sealing BULK-CS-GFR4-233 G-10/FR4 Garolite Bar, 1-1/2" Height, 2" Width, 12" Length

4.500 (4-1/2 inch) x 12 inches ABS Machine Grade Round Rod Natural Bar Stock Durable Plastic Engineering Projects Workshop Fabrication Metal Restoration Industrial-Grade Metal

1.250 (1-1/4 inch) x 12 inches (3 Pack) ABS Machine Grade Round Rod Black Durable Plastic Engineering Projects Workshop Fabrication Metal Restoration Industrial-Grade Metal

1.250 (1-1/4 inch) x 24 inches (3 Pack) ABS Machine Grade Round Rod Black Durable Plastic Engineering Projects Workshop Fabrication Metal Restoration Industrial-Grade Metal