Infinity Tools 1/2吋柄榫頭與榫眼銑刀（附軸承）

The downshear geometry on these bits is exactly what I needed—clean, fray-free cuts on hard maple with zero tear-out on the cross-grain. Flat bottom and crisp shoulders every pass, just set it and go.

Cut a dozen white oak tenons for a dining table, and the downshear geometry left the shoulders razor-sharp with zero tear-out. The bearing ran smooth and true, no burning even on the last cut.

Used these on some hard maple tenons and the shoulders came out razor sharp with zero tear-out. The bearing rides smoothly and the flat bottom is exactly what I needed for tight joinery. Worth every penny so far.