The product is a lot of TEN (10) Quartz Crystal HC-49U components with a PCB Mount mounting style and Through Hole termination style. These crystals are from various brands such as FOX, J-TECH, M-TRON, KDS, CAPAR, ABRACON, and CTS, offering a frequency stability of ±50 ppm. Each crystal has 2 pins and belongs to the Quartz Crystal type, ideal for electronic applications requiring precise frequency control.