The iPlus TTP offers a rubber tip for touchscreens protected under the back screw cap. The large front cap covers the usual pen tip, compatible with Parker large capacity refills or Fisher Space Pen refills. The milled aluminum body of the Tactical Tablet Pen has an added engraving. Please note: For inserting refills, the pen is unscrewed with a left-hand thread. This prevents the pen from being accidentally taken apart when the cap is unscrewed.