Emerson Custom CTS 500K 9,5 Split Pot, 500 kOhm Guitar Poti, Designed to provide optimal performance and sound, Each poti is individually tested and has a durable brass shaft and thread, Low rotational resistance for faster and easier control, Especially tight ± 8% resistance tolerance, Specially developed logarithmic resistance curve allows a very smooth and uniform control over the entire path, Resistance profile: Logarithmic, Shaft: Knurled, Shaft length: 9.5 mm (0.38""), Thread diameter (hole): 9.5 mm (0.38"")