Product Name: Carbon Film Potentiometer Model: RV24YN 20S/B501 Material: Carbon film Metal Resistance Value: 500R ohm Power: 2W Tolerance: +/-10% Turn Number: Single Turn Terminals Number: 3 Features: Round Shaft Total Size: 33.4mm x 24.4mm/1.31 x 0.96 inch (H * D) Screw Thread Dia.: 8.7mm/0.34 inch Shaft Diameter: 6mm / 0.24 inch Shaft Length(do not include the Screw Thread parts): 10mm / 0.4 inch Shaft Total Length 20.5mm/0.8 inch Color: Black, Silver Tone Package Content: 1 x Carbon Film Potentiometer Features: 500R ohm, 3 Terminals, Single Linear, Suits Most Standard Knobs.(this item do not include Knobs) Top adjustment type and knurled shaft for easy operate in daily use. Main used to control electrical devices such as volume controls on audio equipment. Knurled shaft with split design for push-on knob.