Product Name : Potentiometer; Resistance Value : 50K ohm Adjustment Type : Top Adjustment; Type : Dual Linear Features : Knurled Shaft; Shaft Diameter : 6mm / 0.23"; Shaft Length : 15mm / 0.6" Mounting Hole : 6.9mm / 0.27"; Base Height : 10mm / 0.4"; Base Diameter : 16mm / 0.62" Package : 2 x Potentiometers Material : Metal & Electronic Parts Color : As Shown Weight : 15g 6 Terminals, Dual Linear, Suits Most Standard Knobs. Top adjustment type and knurled shaft for easy operate in daily use time. Main used to control electrical devices such as volume controls on audio equipment. Knurled shaft with split for push-on knob. Note:Light and different displays may cause the color of the item in the a little different from the real thing.The measurement allowed error is +/-1-3 cm.