to body 20 of the bit by a single stub axle on the axle leg 26 as is well known in the art as illustrated the cone 18 has diamond studs 22 thereon for drilling hard surfaces those skilled in the art will understand that the cone could have teeth as illustrated the body 20 includes leg 24 opposite the axle leg 26 to which the cone 18 is connected the leg 24 has the bore 12 extending down through it and terminates at threaded union terminal 28 nozzle 30 is attached to the leg 24 by union 32 at the union terminal 28 those skilled in the art will understand how to make a fluid tight connection by means of a union and further disclosure of this joint is omitted for brevity nozzle 30 is generally u shaped so that discharge tip 34 of the nozzle is directed upward the discharge tip of the nozzle is within discharge passage 36 which is formed within the body 20 of the bit the discharge passage extends up and discharge 38 of the discharge passage 36 is pointed upward the discharge passage 36 itself is generally vertically oriented it will be understood that when a large volume of drilling fluid commonly called mud is pumped through the drill string into the bore 12 and through the nozzle 30 and out the tip 34 that it will form.