4 the less axial force the capping head assembly will present a cap at any given position of the turret relative to the bottle and cap array as best shown at 23 of fig1 an outer radial periphery of the rotatable driven sleeve 4 can have marked thereon indicia which allows a customer to be able to note a preferred setting of the ring 15 and jam nut 16 which achieves a particular desired performance while this is in the form of a numerical scale in fig1 other alternative indicia could be used e g colors as will be appreciated best from fig3 the radial outer periphery of the top portion of the rotatable housing 20 at facing surface 26 in cross section mates in female male fashion with that of the corresponding shape of the bushing 39 s 14 inner facing surface by having surfaces 25 26 both gently arc outward in a symmetrical fashion for most of the circumference forces are equalized there is a self centering and wear points are reduced threaded onto the bottom of the rotatable housing 20 at 22 is a clutch assembly generally 21 it has a torque adjustment ring 27 which rotates the pole positions of one magnet array 33 relative to another 31 thereby altering torque a screw 28 fixes the torque adjustment ring 27 at a selected position and scale 30 allows.