I used this hand grip because I was taking piano lessons, but I'm selling it now that I've stopped. This hand grip allows for 4 levels of resistance, making it ideal for grip strength training. There are no noticeable scratches or stains, but there are some minor scratches and signs of use. Also, please understand that this item has been stored at home for a long time before purchasing. - Brand: Planet Waves - Model Name: VARIGRIP - Function: Adjustable resistance settings (4 levels) - Color: Black - Material: Plastic, rubber Thank you for looking.