Alpha Potentiometers are known for giving great value and are one of the most common potentiometers used in guitar electronics circuits. This 25K Ohms resistance pot is for use with active electronics like EMG, Seymour Duncan Blackouts and Fishman Fluence pickups and these are full size pots whereas those included with active pickups are normally mini pots. The pot comes in linear taper and audio taper with linear traditionally being used for tone controls and audio taper for volume controls. These are metric spec potentiometers with an 8 mm threaded shaft and coarse 18 spline knob mounting, the metric size is commonly found on guitars made in Japan and East Asia (Epiphone, Squier, Ibanez, Schecter, PRS SE etc.). To use metric knobs that have a set screw simply line up the set screw with the split in the shaft and tighten the screw. Mounting hardware is included (these pots may have a locator tab on the top side of the pot, bend this down flat before fitting).