Patent ID: 8495934

Claim:
A tool extension, comprising: a plurality of intermediate couplers, and each having a hex-faceted male end and a matching female end that, when engaged with each other, form a hex slip joint for permitting substantial pivoting between the male and female ends; a bell body disposed on each female end of a corresponding intermediate coupler and having a generally smooth and spherical main surface; a lip and an adjacent groove disposed on each of a corresponding intermediate coupler between a neck of the male end and the bell body; a plurality of pliable control covers each configured on a first end to be snapped over the lip and into the adjacent groove of a corresponding intermediate coupler, and configured on a second end to cup, bridge over, and socket with a bell body of a next coupler to keep the two adjacent couplers connected during use; wherein each pliable control cover sockets over a next bell body such that said hex slip joint can flex smoothly when pressure is applied without flopping around or disconnecting.