All metal construction, quality stainless steel brushes, cleans both battery post and terminals

"If you're into cars then you need to be into MOTORZ! Chris Duke and his down to earth attitude and humor, along with is very professional and easy to listen to way of explaining all types of automotive bolt-on applications, everything the average and not so average car guy/gal is into. Did I mention his humor? w00t! And Jason has the camera quality shots down beautiful. Very well edited, this show should be on SPEED or Spike or Discovery channel for that matter. Above and beyond in a word: Excellent! You gotta see this!"