Abstract: A scouring device comprising a stationary housing having a motor therein, an electrical connector extending from the motor for connection to a power source, a flexible drive shaft extending from the housing and at a first end of the shaft connected to the motor, a mobile housing connected to a second end of the shaft, the mobile housing having a first member mounted therein and fixed to the shaft and adapted to rotate therewith and a second member mounted therein and axially spaced from the first member and in alignment with the first member, a spring biasing the second member to a position removed from the first member, and complementary connection structure on the first and second members adapted to interconnect with each other, whereby to transmit rotation of the flexible shaft to the second member.