Mechanical Pencils With Extendable Erasers

A lot of people seem to like a big eraser on their mechanical pencil, so here’s a list of mechanical pencils with large erasers. How big is large? I’ve decided that any eraser that is extendable will qualify, irrespective of its cross-section, diameter or length; and that’s it. Extendable or nothing. I’ll update this list as I become aware of new pencils. No promises, but I will try and remove pencils from the list if they are discontinued by the manufacturer. Please let me know of any currently available mechanical pencils with extendable eraser, along with the relevant details. Discontinued pencils don't count. I am not going to include details of the eraser composition, the length you can extend it out, etc as this list is just a starting point for folk to do their own research.
All are round cross-section erasers using a twist out mechanism unless otherwise noted.

Last Update 28 February 2009

Actually I can't really be bothered updating this list, so this is it for the moment. However over in the sidebar labels section there is a label for Extendable Erasers and that will update as I review any mechanical pencils with extendable erasers.

Wide Erasers (over about 4mm or 3/16th inch diameter)

Artline Click-It
Faber-Castell Grip Plus
Faber-Castell Grip 2011
Papermate Clearpoint
Papermate MegaLead
Papermate PhD
Papermate Sidetrac
Papermate Titanium
Penol Jumbo
Penol Pastel
Pentel Side FX
Pentel Twist-Erase
Pentel Twist-Erase Frost
Pilot Clicker (push slider mechanism)
Sakura Sumo Grip
Stabilo Min Gum
Staedtler Noris 771
Staedtler Remedy
Staedtler Triplus Micro

Narrow Erasers (about 4mm or 3/16th inch diameter and under)

Faber-Castell Grip 1345/7
Faber-Castell Grip Matic
Faber-Castell TK-Fine Executive
Faber-Castell TK-Fine Vario L
Koh-I-Noor Mephisto Profi
Papermate Apex
Papermate / Sanford ProTouch II
Papermate / Sanford Technician II
Staedtler Integrity 9505