4 in. Insert Rail Head, 3-Wing, 1-1/4 in. Bore, Shaker Pattern — Tongue

Cuts the tongue on shaker cabinet door rail ends — the 4 in. tongue body in Schmidt’s insert shaker set, the smaller-diameter option for lighter shapers or reduced projection. Three wings on a 1-1/4 in. bore run counter-clockwise with the wood face down, seating 30mm carbide ISR70 tongue inserts (ISR70RC, or ISR70RCEE for an eased edge) — the same inserts used by the 4-1/2 in. ISRH700R. The tongue keys into the groove from the matching ISRH70S stile head to form the flat, square shaker joint. Sold as the body only; inserts ordered separately. Also available as the 4-1/2 in. ISRH700R.