Like many of DRT's creations, the Varial Handle is not without some additional complexities. It does include washers and a Torque wrench, however in order to install, you will need to purchase the corresponding DRT Varial Handle nut or bolt
(only one of the two - check info below) and make sure to get the model with the correct orientation - ie Left or Right Hand.

These reels can be used by purchasing the DRT B1 Bolt (no LH or RH differentiation).

Steez

Older Zillion models
Ryoga
Daiwa Z

- Daiwa/Abu/Shimano Nut Models

These reels can be used by purchasing the DRT Abu/DaiwaShimano Nut.

Abu Garcia
Daiwa reels with nut - current Zillion, Tatula, Pro Rex, Lexa, etc
Pflueger
Shimano Conquest 300, 400
Shimano Tranx 300,400
Shimano Curado 300
Pluton
Ryoga 1520 CC

- Shimano Nut Models

These reels can be used by purchasing the DRT Shimano Nut.

Antares
Bantam
Metanium
Calcutta Conquest 200
Cardiff 400
Calcutta B Series
Calcutta TE 200
Corvalus 400
Curado 200
Citica
Chronarch

100% will not work on Calcutta D