Wet Diamond Core Drill Bit Set 1.7'', 2.5'', 3.5'', 4.5'' for Brick Concrete Block Granite Marble Hole Saw Drilling Coring, 4pcs/set (1.5'' 2.5'' 3.5'' 4.5'')

Wet Diamond Core Drill Bit Set 1.7'', 2.5'', 3.5'', 4.5'' for Brick Concrete Block Granite Marble Hole Saw Drilling Coring, 4pcs/set (1.5'' 2.5'' 3.5'' 4.5'')

• 【MAIN PARAMTERS】Segment height: 0.4''; Bit Diameter: 1.7'', 2.5'', 3.5'', 4.5''; Bit Length: 17.7''; Package size: 18'' x 13'' x 9''; Shipping weight: 20 lb.
• 【PREMIUM CORING BITS】This drill bit set 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).
• 【MULTIFUNCTION CORE BITS】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.
• 【WIDE APPLICATION】Excellent choice for all type of general drilling, Ideal for plumbers, electricians or general contractors.
• 【KINDLY NOTE】The thread diameter of the water drill is 0.87''/22 mm. Please make sure your product can use 0.87''/22mm thread diameter before your order.