These are 3 rubber strips for bowling ball finger holes. Each strip is 1 meter long, so I think one strip is enough for about 5 balls if you cut it to your size. Compared to regular finger grips, you can feel a better grip with these rubber strips, and most importantly, they hardly wear down with each throw. I use them and replace them about once every 2-3 years when I notice the rubber deteriorating. Recommended for those who find their finger grips wear out quickly and need frequent replacement, or for those who tend to feel discomfort in their throws due to grip wear! Length: 1 meter *slight error possible* Width: 2.5 cm Thickness: 2 mm *slight error possible* Material and hardness are unknown. For an image of how to attach them to the ball, please see the 6th image.