The bogey wheels on your Snowdogs contain a sealed bearing that does not require greasing. Naturally, you might wonder why there's a hole on each and every bogey wheel. It turns out this is simply how those wheels are made, and the hole is not necessary.
If your bogey wheel plugs should fall out for any reason, or if you've misplaced one or more, don't worry! This kit contains 10pcs of the OEM plugs.