I purchased this Amana tool - 55200 Carbide Tip 82° Screw and #4 Countersink with Adjustable Depth Stop 55246. Good news first: 1). The countersink 55200 is ideal for the adjustable depth stop 55246.2). Carbide tips looked very well polished.3). Excellent chip evacuation when used with the 55246 adjustable depth stop. Now for the bad news: the countersunk hole was rough, not round, with noticeable burrs on the edges. This result is due to several disadvantages of the product: 1). The pilot bit…