Bit coupling means

In a coupling assembly for coupling a working member in coaxial alignment with an elongated force transmitting member, the improvement comprising:

• rigid means adapted to receive portions of said members within respective axial end portions thereof and cooperable with respective adjacent peripheral surfaces of said members to maintain said coaxial alignment;
• locking means having an internal portion thereof cooperable with an adjacent external portion of said force transmitting member to provide a selectively adjustable circumferential alignment therebetween;
• and securing means cooperable with portions of said rigid means and said locking means to positively maintain said selectively adjustable circumferential alignment and to maintain a circumferential alignment between said rigid means and said locking means.