Pulley block with U groove Guide Pulley: engineered with manufacturing technology to deliver strong load bearing capacity and reliable service. The U groove guide provides stable rope alignment for smooth operation and reduced wear. Heavy duty pulley: constructed from preferred materials for safety and practicality. Robust and durable for long term use in home and everyday tasks. Lifting rope pulley: features a simple, practical structure that is easy to install and disassemble. Supports repeated use and is well suited for sliding door applications and light hoisting needs. Steel pulley block: thoughtful design helps reduce vibration while remaining flexible and practical. Suitable for fixed mounting with a U type fixed pulley configuration. Use scenarios Sliding door or closet track upgrade: install the lifting rope pulley with U groove guide to improve door smoothness, reduce rope wear, and extend service life of track hardware. Small hoist or tool lift in home workshop or garage: use the heavy duty pulley or steel pulley block for dependable lifting of lightweight loads with stable operation and quick mounting. General rope guiding and load bearing in DIY projects: employ the U groove guide pulley for precise rope routing and reliable performance in custom rigs, pulleys, or fixed installations.