2 pcs of 500K OHM C500K 500KC Anti-Log Taper Potentiometer Features : Knurled Shaft Suits Most Standard knobs Adjustment Type: Top Adjustment , Type: Anti-Log Reverse , Type C Power: 1/2W , Resistance: 500K OHM OHMS Mounting Hole: 7.5mm , Base Diameter: 16mm Shaft Diameter: 6mm , Shaft Length: 10mm