Hi central...
Here is an excerpt from RoadFly.org
7336: Called a "sander" by Porter Cable, includes a 6" counterweight and 6" sanding pad, P/N 16000
7336SP: Sander/Polisher, includes plastic carrying case, 6" counterweight, 6" sanding pad, and 6" polishing pad, P/N 54745
7424: Called a "polisher" by Porter Cable, includes 5" counterweight and 6" polishing pad
7424SP: Similar to 7336SP, but uses a 5" counterweight and 5" sanding pad, P/N 13700
Regardless of which model you purchase, they all share the same "body", which includes:
3.7Amp motor (110v)
2500 - 6000 orbits per minute with variable speed control (level 1-6)
5/16" spindle diameter
Around 6lbs total weight
Adjustable side handle (can be mounted on the "left" or "right" side of buffer body)
The average street price for a 7336 is right around $125.
http://bimmer.roadfly.org/bmw/forums/detailing/forum.php?postid=1430487&page=1
With Aloha,
Ranney
