This is a clever variation on the Drill 'n Drive device that Norm used for a number of years. The basic chuck (top, left) has a spring loaded detent released by pulling back the round housing. A number of standard, hex-shanked accessories—most commonly a drill bit/countersink/counterbore (bottom, left), but also a screwdriver bit—can be fitted.
I vaguely remembered noticing them in early viewings of the episodes in which they appeared, but never thought about memorializing them until my April 2007 run-through. There may be some overlap with the JackRabbit which was introduced soon after.
Appearances: Episodes 708, 709, 907
