For the OP, these are the details of what I purchased from Walmart in July for a BX. $45 delivered. They work perfect.I have posted a few times about spacers and I even linked to the ones I bought. I paid less than $40.00 for mine. What model tractor are you wanting spacers for?
2 QTY Wheel Spacers Adapters 2" fits all 5x4.5 (5x114.3) Hubcentric vehicle to 5x4.5 wheel bolt patterns with 1/2-20 threads - Compatible with Jeep Wrangler TJ Cherokee Liberty
You can use this info to search if you like. 5x4.5 means five holes on a 4.5 inch circle diameter. They are sold to fit a Jeep but work perfect on a BX. I looked but could not find the original thread where I learned about these...sorry...
By the way, BX wheels are not hubcentric, but rather lug centric. But the hubcentric part of these spacers fits through the BX wheel hole fine.