As an Amazon Associate, we earn from qualifying purchases. Home » QANTEK » QC6A20.0000F18B23M CRYSTAL 20MHZ 18PF 6MM X 3.5MM CRYSTAL 20MHZ 18PF 6MM X 3.5MM QANTEK . QC6A20.0000F18B23M Attributes Brand name, Manufacturer name, ManufacturerQANTEK