ød1 ød2 Conversion adapter Adapter for external thread - internal thread conversion An adapter to connect with a smaller tube diameter is also available upon request. Drill head Drill tube Adapter Drill tube ød1 : Outer diameter of the tube that is applicable for the drill head ADPT- / ød2 : Outer diameter of the tube that is connected with the adapter SS Single-startthread SS Single-startthread TS 2-startthread TS 2-startthread Designation example FS 4-startthread FS 4-startthread For the conversion from ST11 to UB47 ød1 ød2 ADPT-F47FS / F47SS F Internal thread F Internal thread ST11 UB47 M External thread M External thread Tungaloy 19