Patent ID: 7392576

Claim:
A method comprising the steps of providing a first portion with an outer surface having external threads and an inner cavity having internal threads, and wherein the external threads and internal threads are threaded in opposite hand directions; providing a second portion having an end having external threads and wherein the external threads of the second portion can be screwed into the internal threads of the first portion to attach the second portion to the first portion; wherein the second portion includes a first section and a second section; wherein the first section is directly connected to the second section; wherein the first section has external threads and the second section has no external threads; wherein the first section has a first length and the second section has a second length; wherein the second length is substantially longer than the first length; wherein the first section can be inserted into the inner cavity of the first portion so that all of the external threads of the first section are inside the inner cavity; and wherein the first portion is a plug and the second portion is a pencil.