Specifications:
Segment height: 10mm/0.4''

Bit Diameter: 44mm/1.7'', 63.5mm/2.5'', 88.9mm/3.5, 112mm/4.5''
Bit Length: 17.7''
Package size: 18'' x 13'' x 9''

Shipping weight: 20 lb

Advantage:
USA Thread, No need adapter

Features:

Excellent choice for all type of general drilling
Ideal for plumbers, electricians or general contractors

Application:
Intended for drilling hard concrete, block, brick, masonry, and the like materials
It is suitable for drilling and coring of reinforced concrete, brick wall drilling, air conditioning installation, pipe, road signs drilling, expressway and other outdoor projects.
This product is tested, thickness of 220mm/8.7'' cement block, inside four 14mm/0.55'' steel bar, play through about need 4 minutes, can play 40 holes. Hand-held drilling machine need 3-4 minutes to play through the brick wall (only for reference, different operating conditions will affect the bit working life)

Kindly Note:
Drilling method: use Wet only
Rhinestones: In the use of the process must be added water, should be drilled to dig core engineering, the proposed matching fixed or hand-held drilling rig
Install the bit: first check the spindle has no swing, electrical and mechanical parts are normal, on the bit to ensure that the drill and drilling rig clamping, and maintain concentric.

Package Included:
4 x Wet Diamond Core Drill Bit (1.7'', 2.5'', 3.5'', 4.5'')