The A4 is a slightly overstable disc that fills the distance gap between midranges and putters and is designed for all skill levels. The disc is consistent and reliable in moderate wind conditions and perfect for short approach shots. It works equally as well for backhand or sidearm throwers. The A4 is similar in feel and flight to the A3, except for a slightly straighter finish.
 
500 Plastic was development over a considerable period of time to formulate a blend based upon player feedback. It has a stiffer, less gummy feel than 400 Plastic. The 500 blend provides an extremely confident grip on the firm, yet flexible flight plate. It also provides a very solid feeling rim.