Levelling Box Knuckle Dual Bore Ø16/19 MM Heavy-Duty Linkage - Sparex Part S.74636The Sparex S. 74636 Levelling Box Knuckle provides a secure and stable connection between the levelling box and lift arm, ensuring accurate implement height adjustment and consistent performance in the field. Designed for heavy duty use, it enhances linkage strength and reliability during demanding agricultural operations. This robust knuckle features dual bore sizes of 16mm and 19mm with corresponding knuckle widths of 44mm and 48mm, offering