Winit Tool's Brass Balls With Brazed Copper Line coolant nozzles have the rigidity to stay put in hash environments with coolant & air pressures up to 475psi. The design uses 3in of soft copper tubing, this is an ideal application in tight spaces with sharp corners or long extensions . A prefect fit for CNC lathes, screw machine, Vdi tool holders and tooling specials. Great alternative to loc-line style coolant hose when you need something more ridged. Price is for 5 nozzles with 15MM ball