Powerstate brushless motor offers outstanding power, run time and durability in conjunction with RedLink Plus electronics and RedLithium battery pack (sold separately). Auto-rotating heads from 9.9 to 50mm offer accurate, one-handed expansions. Features One-Key tool-tracking and remote locking, LED work light and 2 speed settings: up to 32mm or 40mm and above. Compatible with all existing M12 and M18 expansion heads up to 50mm and works with all M18 batteries (sold separately). 50mm Max. Expansion Head Size 2-Speed Rubber Overmould Grip Trigger Switch LED Work Light Brushless Motor Does Not Include Battery or Charger 50mm Max. Expansion Head Size 2-Speed Rubber Overmould Grip Trigger Switch LED Work Light Brushless Motor Does Not Include Battery or Charger