The Yaxley SPR213 (Mallory) Volume Control is a replacement potentiometer component manufactured by Yaxley/Mallory for vintage electronic repair and radio restoration. Rated at 25K ohms (250M), this control features a base measuring 1-1/2 inches in diameter. The dual-shaft design features a 1-1/4 inch front shaft and a 1-1/4 inch back shaft, with a 1/2 round outer shaft diameter and a 1/2 inch inner diameter for precise knob fitment and reliable performance.