Y SHAPE ARMS -- Y shapes arms is an innovative, considerate and practical design used in helping hands tools. Adjust the support pipe arms, regulate the whole project. When 2/4 arms needed, only adjust the base arms, very convenient to change the height, angle of gripping without tedious and stiff to adjust arms one by one, or put items off and put on to change the orientation. More freely than traditional single helping hands arms and protect your precise item.