3 Inch 4 Inch 6 Inch Core Drill for Concrete, Masonry, Pavers, Bricks and Blocks with 1-1/4 in -7 Shank.

• Product: Diamond Tip Drill Bit
• Connection: Gas 1/2 Screw, Unc 1-1/4-7 Female Screw
• Machine: Core Drilling Machine
• Transport Package: Plywood
• Specification: 456
• Trademark: BEST
• Origin: China
• Production Capacity: 5000

Product Description

•  

It is designed for delivering the highest performance and long life
This core drill bit is optimized for a wide range of construction materials 
including concrete, masonry, pavers, bricks and blocks. Fits on drills with 1-1/4 in.-7 shank.

Laser welded segments and thin wall steel core for reliability
Grade A diamond crystals for highest concrete coring performance
Suitable for both dry and wet use
4-1/2 in. x 14 in. x 1-1/4 in.-7 shank
9 mm flat tips for fast coring
Ideal for both professional contractors and DIY users
 

Diameter		Connecito	Total Length
	18mm	M22	450
	20mm	M22	450
	22mm	M22	450
1"	25mm	M22	450
	27mm	M22	450
	30mm	M22	450
	32mm	M22	450
	36mm	M22	450
1.5"	38mm	M22	450
	40mm	M22	450
	44mm	M22	450
	46mm	M22	450
2"	51mm	M22	450
	56mm	M22	450
2.5"	63mm	M22	450
	66mm	M22	450
	71mm	M22	450
3"	76mm	M22	450
	83mm	M22	450
3.5"	89mm	M22	450
	96mm	M22	450
4"	102mm	M22	450
	108mm	M22	450
	112mm	M22	450
4.5"	116mm	M22	450
	120mm	M22	450
5"	127mm	M22	450
	132mm	M22	450
5.5"	140mm	M22	450
6"	152mm	M22	450
	159mm	M22	450
	162mm	M22	450
6.5"	168mm	M22	450
7"	180mm	M22	450
8"	200mm	M22	450
	220mm	M22	450
9"	230mm	M22	450
	245mm	M22	450
10"	254mm	M22	450
11"	270mm	M22	450
12"	300mm	M22	450
13"	325mm	M22	450
14"	350mm	M22	450
16"	400mm	M22	450
18"	450mm	M22	450
20"	500mm	M22	450
24"	600mm	M22	450

Learn how to drill into brick without cracking it by following these tips:

1. Ensure you drill perpendicular to the wall. 
2. Make smaller pilot holes first. 
3. Repeat the process once you've finished drilling the hole too. ...
4. If the drill only has one speed setting, drill in short bursts to avoid overheating the drill bit.