Replacement Thread Tension Assembly - Fits Singer Model 66 & 99

New replacement thread tension assembly.

• Diameter of barrel is 17.4 mm 

Fits early Singer models 66 & 99 with no numbered dial.

• Will not fit the 99K1 or early model 99 with 3/4" diameter disc.

This is a nice replacement tensioner, included is the release pin.

Note: release pin will need to be cut to length or use the original one.