YONICO Tongue and Groove Router Bits Set for 3/4-Inch Stock 1/2-Inch Cutting Depth 1/4-Inch Tongue 2 Bit 1/2-Inch Shank 15221
This matching Tongue and Groove router bit set cuts a 1/4" Thick tongue into stock up to 3/4" Thick. The cutting depth is 1/2" And the shank diameter is 1/2". The set is pre-shimmed and comes in a handsome wooden box. Additional shims are included in case further adjustments are necessary.