Features: Our pilot shafts in different sizes meet your daily life and woodworking needs, with a durable and sharp cutting head for increased work efficiency and reduced energy consumption Specifications: Material: carbon steel and brass Includes: 7mm, 8mm, 3/8", and 10mm Pilot cutter shafts 1* 3/4" Cutting head 1* Hex key wrench 1* 0" Size shaft 5* Bushing O Fits over 7mm Pilot to keep it centered