3 to 40pF 808 Series Vishay Film Dielectric Trimmer Capacitors, Suitable for HF to VHF construction. These are top adjustment, polypropylene dielectric, & rated at 250vdc.
Colour Violet, Size 7.5mm W x 10.25mm L x 13.5mm H. Lead spacing 7.5mm. Freq Resonance 300MHz, Temp coeff -50 +/- 500, 250vdc
Actual Part # 222280811409 For more information please see the 808 series Data Sheet