Double Parallel Pulley 4"H Black Plastic with Metal Housing, Two 50mm Wheels, Hooks Top & Bottom Pack of 15 By GSC International Inc.

This pack of 15 Double Parallel Pulleys is ideal for physics classrooms, STEM labs, and DIY mechanical projects. Each pulley features two 50mm black plastic wheels in parallel, housed in sturdy metal for smooth rotation and reliable mechanical demonstrations.

Hooks at both the top and bottom allow easy attachment to cords, weights, or other apparatus, providing versatility for educational, workshop, or DIY setups. Their compact and lightweight design ensures convenient handling, placement, and storage during experiments.

Designed for long-term use, this set of pulleys combines durability, reliability, and functional flexibility. Perfect for students, teachers, and hobbyists, these pulleys offer a practical solution for bulk educational and mechanical applications.

Key Features:

• Reliable Mechanical Performance: Smooth rotation with dual durable plastic wheels | Full Dimensions: 4"H x 2"L x 1"W
• Versatile STEM Tool: Pack of 15 perfect for physics experiments, mechanical demonstrations, and educational projects
• Easy Attachment: Hooks on top and bottom allow secure and flexible setup in labs or DIY projects
• Compact & Lightweight: Easy to handle, transport, and store for classroom or workshop use
• Durable Construction: Plastic wheels with metal housings ensure long-term reliability for repeated experiments