M10 Female Thread 45# Steel Swivel Ball Joint Rod End Bearing 5pcs Silicone Tubing * Style: Rotate 360 degrees

* Style: Rotate 360 degrees

A Crane Pulley Block is a kind of hoisting tool

and can also be used in furniture with built in speakers or architectural applications of room design to cover speakers or other equipment from sight

2pcs X Acrylic Sheet

M10 Female Thread 45# Steel Swivel Ball Joint Rod End Bearing 5pcs Silicone Tubing * Style: Rotate 360 degreesRolling bearings use rolling elements to maintain the separation between moving parts to reduce rotational friction and support radial and axial loads. Widely used in electrical machinery, power tools, sports equipment, packaging machinery, food machinery, printing machinery, woodworking machinery, textile machinery, light machinery, mining machinery, engraving machines, automation equipment, CNC equipment, and so on.