Pelz Golf DP4014 O-Ball with Sharpie Pen, red, Standard

This is my 4th one (first stolen/2 broken). Broke at the tab where two lines intersect with 90 degree line. I prefer the parallel lines vs single line.

Simply put, this is the best putting aid I have ever used. Dual red lines are easy to line up. Immediate feedback, only a pure strike will keep lines rolling perfectly. Love it.

Came quickly solid construction and works just as expected. Provided a marker with product so that was a nice bonus

I bought this to replace one of the same that broke after long use. The new one does not conform to the ball properly so it is difficult to use as intended. Not expensive enough to return. Too bad.

Good in theory but not sure that I have the patience to fully implement it. I found I was spending a lot of time getting the alignment correct prior to putting so I haven't used it a lot.

Great putting aid!!

Easy to put the marks on the golf ball and the multiple lines gives a better alignment view than just a single line based upon my experience of trying single line markings.

I enjoy watching the parallel lines roll when I put. It lets me know if I made a solid putt or not. However, my biggest gripe with this product is that it leaves red marker all over your clubs. Especially the woods. If you don't notice immediately and wipe the club the marker gets harder to get off. So now your $400 driver has red marker on the face. Instantly makes it look old. Also, I hate that the clamp has to be realigned in order to mark the whole ball. Hopefully you're able to line everything up perfectly, otherwise, you end up with crooked lines.