Deluxe Iambic Paddles Clear Paddles on Black Base Full range adjustment in tension/contact spacing. Self-adjusting nylon/steel needle bearings. Machine frame Non-Skid feet Heavy base MFJ-5166 is suggested but not included (MFJ-51666 is an Iambic Paddle to Keyer cable. It has 3 pre-wired solder lugs on paddle end and a 3.5mm mic jack on the other end with 1/4 phone adapter (to fit the MFJ keyer).