Countersink Bits: 3/32"/2.4mm, 1/8"/3.2mm. 2 x Countersink Bits. Select two different size bits, drill your guiding hole, flip the pivot arm, then drive in any screw, nut, or fastener. Select two different size bits, drill your guiding hole, flip the pivot arm, then drive in any screw, nut, or fastener.
eBay