The BOURNS part 91A1A-B28-A15L is a resilient cermet potentiometer with a resistance of 10K Ohm and a tolerance of 10%. It has a power rating of 2W and features a single electrical and mechanical turn. The potentiometer has a compact size of 6.35mm and can be easily mounted on a pin panel or through a hole. It is an ideal component for various applications that require precise and reliable control of voltage or current levels.