Must Have For Beginner :The Set Is a Great Beginner Set To Improve Your Overall Grip Strength, Recover From Injury Or Increase Your Finger Strength. These Can Be Used By Anyone From Teenagers, Women, Men Or Seniors To Exercise All 4 Major Grip Training Types (Crushing, Pinching, Supporting And Extending) Material :Made Of a Eco-Friendly Plastic That Feels Comfortable When You Do Your Hand Exercise.Plastic Hand Resistance Finger Extensor Exerciser Strengthener Trainer,Visible Physical Force Adjustment, You Can See The Change While Practice. Protable Lightewight :Exercise Your Hands And Forearm From Anywhere Whether You Are At Home, In The Office, Walking, In The Car Or Doing Your Favorite Sport As The Rings Are Lightweight Easily Portable. Comfortable To Use :Designed To Fit Your Hand Perfectly So That You Can Easily Do a Full Exercise Without Readjusting The Grip Strengthener Or Finger Stretcher. Feel Free To Adjust The Size Of The According To Everyone's Finger Condition Applications: It Can Improve Finger Strength For Athletes (Rock Climbing Enthusiasts, Fitness, Tennis, Baseball, Boxing, Tennis, Golf And Shooting) And Musicians (Guitar Players, Bass Players, Pianists And Violinists). See Results Fast Using Your New Hand Exercise Equipment. Product description Description: Adjust the size of the ring spacing, practice at will, and adjust according to the condition of each person's finger. Suitable for electric guitar, bass, ukulele, piano, saxophone and instrument's keyboard. Simple design and light, so the extender is easy to carry for practice at anytime anywhere. The length of the guitar extender is about 20cm, ergonomic design, suitable for people without thick fingers. Made of ABS plastic, durable and flexible, soft intensity, suitable for beginners. Specification: Material: ABS, Copper Nut, Fiber Rod, Silicone Sleeve Color: Black Type: Women Total Length: About 20cm Package includes: 1pc x Finger Extender Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-2 cm differences due to manual measurement.