The DW3278 Circular Saw Rip Fence is designed for use on certain DEWALT Circular Saws, DW390, DW361, DW357 and DW364.
Other circular saw models use a different rip fence.
This product can be purchased or ordered through your local DEWALT Retailers a DEWALT Factory Service Center.
On the rear pivot saws when lowering the shoe for shallow cuts your hand stays behind the motor so pushing the saw is easier. On the front pivot saws your hand rotates up over the motor.