This servo winch is designed to be used as a stand alone winch similar to the Warn PullzAll. Servo mount has integrated lug on the backside that can be used with a hook or fishing swivel to attach to most RC Vehicles.
Update 1/31/19 - Added 2nd model with sides for more strength.
1x .500 Thick Servo Winch Spool: https://www.thingiverse.com/thing:3389900
4x M3 Screws
1x Modified or 360 degree rotation servo
Winch line / braided fishing line
Dull Fish hook