The Clickster grip is a very advanced mec. pencal.The Clicksters lead does not come out by pushing on the eraser but by pushing on the grip.The Clicksters can be found at Kelly's Drug Store in San Andreas every Wal mart (or almost every Wal Mart) or in any mec. pencels store.I think in papermate clickster is the best.Most clicksters only come in red,green,blue, or black.Convenient side lead advance allows for continuous writing with this affordable mechanical pencil. Gives essparent hexagonal barrel to monitor lead supply. Oversized eraser gives economy. The high-tech grip design adds to the comfort. Refillable smoke barrel.It even has a Pocket clip.Convenient side lead advance plus an added grip for even more control over the pencil.These mechanical pencils are refillable (lead and erasers) and come in assorted barrel colors and either a .5 mm or .7 mm lead size. They all have a side lead advance mechanism. The erasers are white. The assorted pack consists of 3 each smoke, red, blue, and green.