Excellent gas padel/thumb rest, it's fully adjustable to virtually any size hand and since it's adjustable it had a slide guard so you can get your thumb as close as tight as possible to the slide without any disturbance of movement.
As usual a professional hi-end product made by a superior company.

Just installed on my Tanfoglio Gold Custom, and could not be happier. Perfect fit, and finish with a lot of room for adjustments. The mounting holes lined up with the Tanfoglio optic mount bracket with no issues. I would recommend it to my fellow open shooters.

Nice piece. Well made and fit my Witness Match without issue.
There is, however, a "dead spot" in the range of adjustment when you move the guide pin between the two vertical guild channels. Either there is no way around this or the guild channel would need to follow a more eccentric shape. But I found I needed (wanted?) a position in between. Your mileage may vary. :)

Extremely well made! Exceptional quality! The adjustment angle articulated exactly as described and is very solid. Being able to adjust this can really be a game changer for a lot of shooters. Being able to adjust this to your shooting style / grip angle, personal comfort adds confidence, repeatability, and takes your mind off of having to think about your grip placement and obviously translates to better speed and accuracy, and follow up shots! A must have!

Unfortunately, this product did not work for me. There wasn't enough adjustment to get it close enough for it to be effective. I replaced it with a GASPEDAL; much better grip.

I have mounted the thumb rest on my Standard Tanfoglio Xtrem .40. It perfectly fits, 2 screws (loctite is mandtory). In comparison to the Tanfoglio model it is adjustable and comes very near to the slide stop, so it is better for small hands, you can adjust the angle. Finish is perfect. The thumb rest prevent as well your thumb to slow down the slide. I will order a 2nd one for my backup gun.