This is a Whiteside rabbeting bit, model 1960, ground for cutting clean rabbets for joinery and inset panels. It and uses carbide-tipped cutting edges that resist heat and hold an edge far longer than plain steel.
Chuck it into a router table or handheld router to cut rabbets for cabinet backs, glass panels, and shiplap joints. The balanced bits run true at speed, so cuts come out concentric and clean with minimal sanding afterward.
Whiteside Machine Company manufactures its router bits in Claxton, Georgia, and is consistently rated among the top-performing router bit makers in independent woodworking tests.
