GT-38S (Air portable tools)
  - default tips: 2 carbide insert tips & 1 carbide rotary burr
  - 2 sides of each tip are available

GT-100B series (Electric powered portable tools)
  - 2 carbide insert tips
  - 2 sides of each tip are available

GTW-1500 (Electric powered portable tools, welding preration)
  - 3 carbide insert tips (square type)
  - All 4 sides of each tip are available

For more information, please go to each model.