The cellular determinants of K+ secretion in the principal cell include the intracellular K+ concentration, the luminal K+ concentration, the potential (voltage) difference across the luminal membrane, and the permeability of the luminal membrane for K+.
The average cost for a brake pad replacement, resurface rotors is between $254 to $361. Labor costs are estimated between $182 to $231 while parts are priced between $72 to $130.
only rear brake pads should only cost you like 100-130 bucks(if that). If they need to resurface the rotors/replace rotors, then it's more obviously. brake pads can break. break pads are nice for a vacation.