Another great product by the same company - Pentel Twist-Erase III: http://www.pentel.com/store/twist-erase-iii-mechanical-pencil http://www.pentel.com/store/tw

Another great product by the same company - Pentel Twist-Erase III: http://www.pentel.com/store/twist-erase-iii-mechanical-pencil http://www.pentel.com/store/twist-erase-iii-mechanical-penci... Some nice things about it: - The tip is metal, so it doesn't flex and break the lead when you're writing. - The clip is metal, so it won't break off after a couple months of use. - The eraser is about an inch long, so you won't have to replace it every week. - The rubber grip hasn't deteriorated in the 5 years I've had mine.