Cheap And Discounts 1 / 2 / 4 / 8 pcs 30A-S 30A - S ESC BLHeli_S OPTO 2-4S Supports Mulitshot Oneshot42 OneShot125 Wholesale. Buy Directly From Merchant Hotrc Official Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.