The stem main rod comprises a stem upper main rod and a stem lower main rod movably connected to each other.

The main shaft (8) defining a longitudinal axis xx about which the main shaft can rotate.

The main stem is molded, and placed in a mold for over-molding seals onto the main stem.

The golf club shaft (2) of a golf club (1) is provided with a main shaft (5) and an auxiliary shaft (6) inserted into the hollow section (5a) of the main shaft (5).

The rotation of the main spindle (230) causes cord to be dispensed through the one guide, the drive spindle bore, and the main spindle bore.

The C- arm (11) is mounted on the major shaft (13).

The locking operation rod (11) is screwed on the main rod (1) with threads.

Hair is disposed through the drive spindle bore and the main spindle bore.

The stand has a removable main and a telescoping sub-pole (10-12) to allow for easy storage.

An injection rod (21) is mounted to a main rod and has a lancet holder (22) at one end side.

The antenna may further include at least one auxiliary rod part connected in series with the main rod part.

A tool (300) having a telescoping handle including a main shank (314) and an outer sleeve (320) complementary shaped to receive the main shank therein.

A longitudinally extending main shaft (8) extends between main housings (5).

A balloon catheter for use in angioplasty that includes a main shaft (14) which is a flexible thin walled metal tube and a hollow, flexible torque transmitting shaft (16) mounted at the distal end of the main shaft.

The coupling device can have a flexible tubular member that connects the balloons to the main shaft, the tubular member having a torsional flexibility greater than that of the main shaft.