Check the listing for details. Dillon Precision Powder Thrower Adjustment Knob & Screw Assembly with Graduation. Condition: New. Listed at 12.99 USD. Dillon Reloading Powder Bar Adjustment Knob/Screw This easy to install screw assembly replaces the factory powder adjustment screw. The Dillon factory screw requires a wrench when adjusting the amount of powder to dispense in your powder thrower. The knob easily allows the user to hand adjust the powder dispenser without the need for tools. Unlike other competitors, the Taylor-Tactical-Supply knob is laser etched with graduations giving the user reference points when adjusting.Works on Dillon 1050, 650, 550, SDB and 900 presses. This accessory is a must for every Dillon owner to help speed up powder adjustment amounts. 1 x laser etched knob with adjustment screw NO POWDER BAR OR POWDER THROWER IS INCLUDED See my other auctions for more shooting related parts. Want to see even more? See my YouTube Channel NicTaylor00