Ridgid ZRR8611501K 18V Cordless Hyper-Lithium X4 1/2 in. Hammer Drill Kit (Certified Refurbished) Fully powered hammer drill but in a more compact size and lightweight design for user convenience 4-pole open frame motor for superior power in a more compact design Grip light engages light independently of trigger to illuminate work space Innovative Hex Grip micro texture for secure grip and maximum user comfort Model selector for quick transition between driving, drilling or hammering modes without changing the clutch setting