Double Tandem Pulley (Pack of 10) – 50mm + 38mm Low-Friction Aluminum Wheels with Hooked Metal Frame by GSC International Inc.
The Double Tandem Pulley (Pack of 10) from GSC International Inc. is a durable, classroom-ready solution for teaching force and motion concepts through hands-on experiments. Each pulley features two aluminum wheels stacked in tandem inside a strong metal housing—one 50mm wheel and one 38mm wheel—making it ideal for demonstrating pulley ratios, mechanical advantage, and multi-line pulley systems.
Designed for smooth performance, these pulleys use low-friction aluminum wheels to reduce drag during demonstrations and student activities. Hooks at both the top and bottom allow quick hanging from lab stands, frames, or suspended loads, while deep grooves help keep cords secure during use. Sold as a pack of 10, this set is perfect for classroom kits, group labs, and repeated STEM instruction.
Key Benefits
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Classroom Bulk Pack: Set of 10 supports group activities and lab stations
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Dual Wheel Design: Stacked wheels enable advanced mechanical advantage setups
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Smooth Performance: Low-friction aluminum reduces drag for clearer results
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Secure Rope Control: Deep grooves help prevent slipping during demonstrations
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Quick Setup: Hooks on both ends allow fast attachment to loads and supports
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Specs: Full dimensions: 0.75" L x 2" W x 5.75" H | Wheel sizes: 50mm + 38mm
