These 5 - inch Baker scaffolding wheels are constructed with a steel structure, providing stable support and high strength load - bearing performance. They are suitable for stacking multiple scaffolding units and their robust build ensures that the scaffolding remains stable in various complex working scenarios. The dual - locking brake mechanism is a notable feature. Each wheel is equipped with a dual – brake device that can lock both the horizontal and vertical axes simultaneously. Compared with single - lock designs, this significantly enhances safety, effectively preventing the scaffolding from sliding accidentally and ensuring operational safety. Made of high - quality non - marking rubber material, the wheels are highly wear - resistant and can significantly reduce noise during movement, minimizing interference with the working environment. Each wheel can support a load of up to 440 lbs., and the entire set of 4 wheels has a maximum load - bearing capacity of 1,320 lbs. With dimensions of 10 x 5 x 1.25 in., they can meet the load - bearing requirements of various heavy objects. The square stem has a specification of 1 - 1/4 in., and the center distance of the lock pin holes is 2 - 1/2 in. 4-spring lock pins are included, and the installation process is simple.