Marcy Wrist and Forearm Developer TARGETS THE FOREARMS, WRISTS, & FINGERS Develop your forearms and wrists with this exercise equipment thats designed to target the flexor and extensor muscles in your arms. This gym equipment also strengthens the fingers to increase your grip strength ADJUSTABLE GRIP  Designed for adjustable grip allowing you to create the perfect fit for your forearms, the grip ensures precise targeting of the muscles in your arms, guaranteeing each muscle group receives enough tension to facilitate development. PORTABLE - This ingenious strengthener measures 14.5 inches in length, 8 inches in width, and 6 inches in height. Its compact structure allows you to easily and conveniently store it at home without taking up too much space. VARIABLE RESISTANCE SYSTEM- This workout gear comes with a variable resistance system that monitors your progress by increasing the resistance toward the concentric phase of the lift, facilitating efficient performance of various arm exercises. COMES WITH 2- YEAR WARRANTY  The Marcy Wrist and Forearm Developer gives you the best value for your money. This exercise tool comes with a two year warranty to let your maximize your purchases and enjoy hassle-free use for a long time.