Correct tooth for the actual tire size - not mfg advert size
I had originally ordered the 31 tooth but the MPH were still off. The tire is listed as a 33in tire but the actual measurement when fitted and the proper PSI when fitted on a TJ comes out to a hair over 32 in. Verified with 2 GPS apps, no longer going faster (34 tooth stock gear) or slower (31 tooth).
When you need a speedometer gear you just need it. This one came with a new o-ring included. Others did not include it and still wanted a higher price.