ITEM NAME:2Pcs Tongue& Groove Router Bit Set 1/4" Shank Woodworking Tool Cutter Description: - Using high-frequency welding technology, strong, durable, and long service life. - Suitable for wooden door frames, wooden window frames, cabinets frames tenon together - Material: alloy - Size: Approx. 2-1/4"(57mm) - Shank size: 1/4"(6.35mm) Package Included: 2PIeces Tongue Groove Router Bit.Shank size: 1/4"(6.35mm). Housekeeping & Organization. Foot Care & Shoes Care. Wedding Party Gift Supplies. - Size: Approx. 2-1/4"(57mm). - Material: alloy. - Using high-frequency welding technology, strong, durable, and long service life.