Vectorputt tm - USGA Approved Golf Ball Mark - Double Sided Golf Ball Marker with hat Clip (30mm)

well made. stays on my baseball cap. magnet works. helps me with my putting aim. so highly recommended.

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It’s a nice reminder and helps making sure you can line up the ball where you want it. However, if you are rubbish at putting or rubbish at reading putts you will still 3 putt.

It doesn't actually determine slope. Once you got that down it helps

It's what I expected

I am a better putter since I started using this and it's a quality ball mark. I liked that it has two ways to align your ball to the hole. The side with the vectors on it is without peer for lining up long putts. Since I started practicing and playing with this, I am significantly better at lagging the ball to the hole. You can instantly tell if you misread the putt because you will hit the ball where you aimed with this thing. More importantly, when you read a putt correctly you will give yourself a good shot at making a few of those bombers. I wouldn't say every round, but at least every other round I'm making a decent length putt and I have had rounds where I've made a couple of long ones. The three line side of the coin is best for me at lining up short putts, something I never did much before buying this. I would just eyeball the line and hit my putt. Now I do focus more on aligning the imprint to where I want the ball to go and the three line side really helps me see the line and adjust the ball accordingly. My buddies have definitely taken notice that I'm a better putter from 3 to 5 feet than I ever was before. It's a great putting improvement tool. Two thumbs up!

Good golf tool.

Excellent ball marker, lining up to intermediate target prior to ball placement resulted in “4 birdies” over last three rounds. Performs as advertised!