I purchased this on Amazon but am selling it because it doesn't fit my hand. It's a beautiful item, only tried on once. Color: Black-2P Material: Silica Brand: MAHOUYA Item Weight: 40 grams Style: Grip Tension Level: 13/17/21 LBS 【Upgraded Finger Exerciser to Enhance Hand Strength】To maximize hand training, we are always working to improve our training equipment. Our finger stretcher is upgraded with unique, strong metal hooks, making it more powerful than similar hand grip tools. 【Gradually Strengthen Your Grip】This adjustable hand grip set provided by Femdela offers three resistance levels: 13 lbs, 17 lbs, and 21 lbs, allowing you to customize your hand exercises and increase your hand strength day by day. 【Portable Grip Trainer Set Goes Everywhere with You】Our hand muscle strengthening set is compact, lightweight, and easy to carry. Put it in your pocket, backpack, or handbag and take it to work, travel, or on trips. 【Durable Hand Strengthener Stands the Test of Time】Made of high-end silicone with reinforced hooks, our hand grip device is skin-friendly, naturally gentle, and extremely strong, not easily broken like many finger and hand or forearm grips. 【Surprise Your Beloved Athletes and Musicians】This hand exerciser set is offered at a pocket-friendly price, making it a great gift idea for strength athletes, pianists, drummers, guitarists, or climbers who want to improve their grip strength.