Gear Shift Knob Fits John Deere 50 60 70 80 530 620 630 720 A AO AR B GOne New Aftermarket Replacement Gear Shift Knob Fits the following models: Fits Case models: 200B, 300B, 320B, 400B, 420, 420B, 500B, 600, 600B, 700, 800, 900, D, DC, S, SC, VAC Fits Co Op model: E2 Fits Cockshutt model: 20 Fits John Deere models: 50, 60, 70, 80, 520, 530, 620, 630, 720, 730, 820 (2 Cyl), 830 (2 Cyl), A (Styled from S N 648000), AO, AR, B (Styled from S N 201000), G (Styled from S N 13000) Plastic, 1. 71" Diameter, 3 8" NF Threads.