The Flanged Stainless Steel Shaft for REV Motion Pattern (8mm REX, 29mm Length) is designed for secure attachment to the REV motion pattern, particularly in conjunction with the REV Ultraplanetary Gearbox. This robust steel shaft is ideal for heavy-duty applications, ensuring reliability and durability. Its 29mm length is engineered to align perfectly with the 24mm shaft length of goBILDA Yellow Jacket Planetary Gear Motors, providing optimal performance in mechanical assemblies.