Carol if you go to the Oral Cancer Foundation main site there is a good description of the PEG tube complete with pictures and many other details of its use and care. I think you will find the information you are seeking there.

Caregiver to husband Dx. Stage 4 SCC of gingiva with 3 nodes pos. Partial mandiblectomy with bone graft from iliac crest Dec. 2006. IMRT x30, Cisplatin x3. Completed Tx. March 15, 2007. Osteonecrosis & removal of graft & plate Oct. 2007. Recurrence of SCC Dec. 2007. Deceased Jan. 17, 2008.