Wood plane. Wood plane. [High Hardness] Adopting high-quality spring, it offers good flexibility and wear resistance. Planer. [High Precision] High precision and durability, high strength and hardness, fine finish and stable performance. Wood plane. [Slotted Socket Converters] High precise clamping force, good gripping stability. Suitable for machine engraving and converting router chucks to wood. Joinery. Joinery. [Various Sizes] This router bit adapter set includes 9 adapter sizes: 8 to 6, 8 to 6.35, 9.5 to 6.35, 10 to 8, 12 to 6, 12 to 8, 12 to 10, 12.7 to 6, 12.7 to 6.35. [Widely Used] Comes with 9 different sized adapters, making them applicable to various drill bit and chuck specifications.