- Easy to install on 1-5/8 in (4.4 cm) wide support channels and compatible with 1-5/8 in (4.6 cm) or wider channels. - Stable, smooth operation: standard deep-groove ball bearings allow quiet, easy gliding. A solid alloy steel shaft provides high strength, while a galvanized coating protects against corrosion. Welded bearing housing adds stability during use. - Durable and reliable: constructed from high-quality alloy steel for long life. Rated load is 300 kg with a breaking strength of 6,613 pounds, delivering robust performance for demanding lifting tasks. - Versatile for a range of users: suitable for construction workers, warehouse staff, and DIY enthusiasts who need to lift heavy items efficiently and safely. - Use scenarios: lifting and guiding heavy components on a hoist along overhead tracks in a workshop; moving pallets or crates along a track system in a warehouse; handling bulky machinery parts during maintenance or assembly in a shop.