Check the listing for details. Handcrafted Boulder Block: Build.Strength and Precision, Rock Climbing Training~. Condition: New. Listed at 20.96 USD. Features:1.Create Custom Routes Like a Pro: Unscrew and reposition holds to design your own climbing challenges. With endless grip combinations, this bouldering trainer lets you become your own route setter train creatively anytime.2.Fun for All Skill Levels: Great for beginners building grip and pros mastering advanced finger strength. The climbing ball includes multiple difficulty levels and techniques like dyno moves and matched holds for versatile grip training.3.Finger Strength Training Anywhere: Build grip strength and finger control using only your fingers. This climbing training ball transforms climbing into a portable puzzle no climbing wall needed. Perfect for improving finger strength and hand endurance.4.Great Gift for Climber.