Cheap And Discounts 5pcs Quartz crystal in-line two-legged resonator HC-49S 13.5MHZ 13.5M 20PPM Passive clock crystal Wholesale. Buy Directly From Merchant Ccrystal oscillator Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.