Cheap And Discounts Grinder Switch Knob 419566-3 Fit For 9553/954/55/56/58 BGA452 DGA452 Grinder Switch Knob Power Tools Accessories Wholesale. Buy Directly From Merchant Shop1103308574 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.