3 Point Linkage Kit Category 1 for Iseki Ford John Deere Kubota Yanmar Tractor. Category 1 Top Link Min Length: 14″ (36cm) Top Link Max Length: 19″ (48cm) Cross Shaft: 7/8″ (22mm) Outside Diameter Ø: 19″ (48cm) Distance between centre Holes of Lower Link Arms: 20″ (50cm) Lower Link Arm Overall Length: 22 3/4″ Lifting Arm Fork Diameter Ø: 20mm Lifting Arm Fork Width: 28mm. Ford / New Holland Various Iseki Various John Deere Various Kubota Various Yanmar Various.