ARTARM grip is designed for arm wrestling innervated by many nerve systems such as muscular fibers, tendons, and ligaments. Arm wrestling grip has usually kept similar designs for decades due to low marketability and productivity. Traditionally types of FAT grips were cylinder or cone that hyperextended joints of a thumb and a flat form caused injury by impeding the use of palmar muscles. * ARTARM grip makes a function by its design. - It is possible to exercise the neuromuscular system adapting a real length of hands of the same as an actual match for the first time. (the exercise of the neuromuscular system increases a chain effect and prevent injury.) - Based on the data from mock-up testing with professional players of the world, it is made of silicon through 3D and mold design for a year. - It is possible to cup a thumb pad and maximize using of forearm muscles and shoulder girdle. A thumb is used to grip but a load of weight goes to the tip of the thumb and it brings effectiveness of both thumb around grip and thumb less grip at once. - It is easily detachable to other sport equipment such as dumbbell, barbell, stirrup handles or any kind of bar type goods.