SM10 Jet Black Finish wearing out

The new finishes are more durable than earlier versions. That said, the timing is variable based on the number of times sand is part of the shot and how many range balls are hit.

This also impacts the quality of the groves. Probably a more important factor than the finish wearing off.

ive not got the jet black but have the new oil can finish and to be honest ive not been impressed with how they have worn, had them about 4 months and its worn off the leading edge and up the face, wouldnt be so bad had they been raw underneath but they are chrome.