Multi-functional pole connection device

A pole connection device, comprising:

• (a) a main body of a generally tubular structure with a sidewall enclosing a center bore, said sidewall having an external surface and an internal surface that defines said center bore and forming a reinforced rim at one end wherein said sidewall has an increased thickness measured as the distance between said external surface and said internal surface, and (b) two flexible arms disposed on two opposing sides of said main body, said flexible arms each having a fixed end connected to said external surface of said main body and a press end extending outwardly away from said external surface, said press end having an inner surface facing towards said external surface of said main body and an outer surface facing away from said external surface of said main body, said inner surface having a protruding tip, and said external surface of said main body having two opposing opening windows that allow respectively said protruding tip of each flexible arm to pass through when said flexible arms are pushed and resiliently bent towards said external surface of said main body, wherein upon said pole connection device being installed on a thin-walled tubular tool pole said reinforced rim covers an end of said tool pole and protect it from being dented or damaged when impacted by another object.