The Fender Grip HARD is a hand grip perfect for strength training. It's a device that improves the finger strength needed for playing guitar and bass. - Brand: Fender - Model Name: Grip HARD - Weight: 7.0 lbs (3.2 kg) Thank you for viewing. I hadn't really thought about it before, but I think the strength to press down on the fretboard is essential for playing guitar. I felt that consciously training with this had the effect of making playing easier. The spring is a bit stiff, so the seller has decided to start with a softer one, which is why I am selling this. I feel it works especially well on the pinky and ring finger. I have opened and used it for a while, so it's a used item, but in good condition. The item is only the main body as shown in the image. The original packaging is not included.