we used the small subcue needles (appx. 31 gauge) that were set in a small disk -- cannot remember the name to save my life but the disk was flat as paper - like a large button and the needle protruded out of the center of it like this ___l___ it was a super easy stick- just place in subcue around back/hip area- then just place a tegaderm over disk and tubing to keep in place. Tubing went straight from diskette/ needle to whatever bag you are using. Hopefully I will remember name of darned thing before it keeps me awake tonight....