BOSCH CO2155B 1-Piece 7/16 in. x 5-1/2 in. Cobalt M42 Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum (Pack of 4)

Tools · sold by Amazon.com · ★ 4.6 (7,330 reviews at Amazon)

No longer listed

Amazon no longer lists this product; it was last seen at $51.96.

Now: $51.96; Price as of Oct 29, 2026, 7:42 PM ET
Usually: $86.36; based on Amazon's “was” price
Deal at: $69.08

View at Amazon ↗ Open in RestockR Deals Price checked Oct 29, 2026, 7:42 PM ET

Price history, last 90 days

$50$75$100 Usual $86.36Deal $69.08

Now $51.96 · lowest $51.96 (Sep 26) · highest $99.16 (Aug 1) since Aug 1. Dashed: out of stock at that price.

Price changes (95)

Changed	Price	Stock
Oct 29, 2026, 1:45 AM ET	$51.96	Out of stock
Oct 28, 2026, 3:19 PM ET	$51.96	In stock
Oct 19, 2026, 10:28 AM ET	$51.96	Out of stock
Oct 19, 2026, 4:53 AM ET	$51.96	In stock
Oct 12, 2026, 4:06 AM ET	$51.96	Out of stock
Oct 11, 2026, 9:31 PM ET	$51.96	In stock
Oct 11, 2026, 10:46 AM ET	$51.96	Out of stock
Oct 11, 2026, 10:45 AM ET	$51.96	In stock
Oct 10, 2026, 4:03 AM ET	$51.96	Out of stock
Oct 9, 2026, 11:57 PM ET	$51.96	In stock
Oct 8, 2026, 10:33 AM ET	$51.96	Out of stock
Oct 7, 2026, 3:42 PM ET	$51.96	In stock
Oct 7, 2026, 8:10 AM ET	$51.96	Out of stock
Oct 3, 2026, 8:31 AM ET	$51.96	In stock
Oct 3, 2026, 12:19 AM ET	$51.96	Out of stock
Oct 2, 2026, 4:28 PM ET	$51.96	In stock
Oct 2, 2026, 12:32 PM ET	$51.96	Out of stock
Oct 1, 2026, 4:42 PM ET	$51.96	In stock
Sep 30, 2026, 8:04 PM ET	$51.96	Out of stock
Sep 30, 2026, 5:33 AM ET	$51.96	In stock
Sep 29, 2026, 5:51 PM ET	$51.96	Out of stock
Sep 28, 2026, 7:55 PM ET	$51.96	In stock
Sep 28, 2026, 3:08 PM ET	$51.96	Out of stock
Sep 28, 2026, 11:23 AM ET	$51.96	In stock
Sep 28, 2026, 8:44 AM ET	$51.96	Out of stock
Sep 28, 2026, 1:25 AM ET	$51.96	In stock
Sep 26, 2026, 6:12 PM ET	$51.96	Out of stock
Sep 26, 2026, 11:23 AM ET	$51.96	In stock
Sep 25, 2026, 1:14 AM ET	$99.16	Out of stock
Sep 24, 2026, 11:54 PM ET	$99.16	In stock
Sep 24, 2026, 5:31 AM ET	$99.16	Out of stock
Sep 23, 2026, 8:53 AM ET	$99.16	In stock
Sep 21, 2026, 11:49 PM ET	$96.20	Out of stock
Sep 21, 2026, 12:38 AM ET	$96.20	In stock
Sep 20, 2026, 9:32 PM ET	$96.20	Out of stock
Sep 20, 2026, 7:22 AM ET	$96.20	In stock
Sep 18, 2026, 12:01 PM ET	$96.20	Out of stock
Sep 17, 2026, 3:32 PM ET	$96.20	In stock
Sep 15, 2026, 11:09 PM ET	$99.16	Out of stock
Sep 15, 2026, 4:31 AM ET	$99.16	In stock
Sep 13, 2026, 11:08 AM ET	$99.16	Out of stock
Sep 12, 2026, 1:38 PM ET	$99.16	In stock
Sep 11, 2026, 4:04 PM ET	$99.16	Out of stock
Sep 8, 2026, 1:16 AM ET	$99.16	In stock
Sep 7, 2026, 5:08 AM ET	$99.16	Out of stock
Sep 7, 2026, 12:48 AM ET	$99.16	In stock
Sep 5, 2026, 6:54 AM ET	$99.16	Out of stock
Sep 4, 2026, 5:38 PM ET	$99.16	In stock
Sep 4, 2026, 7:36 AM ET	$99.16	Out of stock
Sep 3, 2026, 2:57 PM ET	$99.16	In stock
Sep 3, 2026, 9:00 AM ET	$99.16	Out of stock
Sep 2, 2026, 6:14 PM ET	$99.16	In stock
Sep 1, 2026, 3:26 PM ET	$99.16	Out of stock
Sep 1, 2026, 11:58 AM ET	$99.16	In stock
Aug 31, 2026, 6:38 PM ET	$99.16	Out of stock
Aug 31, 2026, 5:54 PM ET	$99.16	In stock
Aug 31, 2026, 12:05 AM ET	$99.16	Out of stock
Aug 30, 2026, 11:53 PM ET	$99.16	In stock
Aug 29, 2026, 5:12 PM ET	$99.16	Out of stock
Aug 29, 2026, 3:13 PM ET	$99.16	In stock