Bosch 120-Volt 1/2-Inch Single-Speed Hammer Drill is $89.00 at Amazon, down from the store's own list price of $145.00. That's 39% off ($56.00 less). We last checked this price on Nov 10, 6:11 AM ET. Prices at the store can change at any time, so check before you buy. Brand: Bosch. Type: Power tools. Picked for all trades and Carpentry & Framing.