Check the listing for details. Soba Router Plane (Ref: 260700)Top Quality Woodworking From Chronos. Condition: New. Listed at 60.35 USD. Ideal for evening out the bottom of grooves, dadoes and housings Useful for inlaying and cleaning out hinge or lock plate housings Fully open throat on one side for better view of stopped housings This small and compact version of the router plane is ideal for smoothing the bottom of grooves, dadoes and housings. It is also useful for work such as inlaying and cleaning out hinge or lock plate housings. The cutter locks in position with a brass thumb screw. The throat is fully open on one side allowing a better view when, for example, working a stopped housing. The base size is 105mm(4-1/8") x 58mm(2-1/4"), supplied with a 6.35mm(1/4") cutter. The planes only require the bare minimum of initial preparation. The blade is oil quenched, high carbon steel, hardened and tempered to HRC 63, and.