"Specifications:- Segment height: 10mm- Bit Diameter * Bit Length:51mm (2"") x 370mm, 76mm(3"") x 370mm, 102mm(4"") x 350mm , 120mm(5"") x 350mmThread size: M22(The thread diameter of the water drill is 22 mm.)- Product weight：1.05kg,1.63kg,2.43kg,2.94kgFeautres:- Excellent choice for all type of general drilling- Ideal for plumbers, electricians or general contractorsApplication:- 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 cement block, inside four 14mm 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).Notice: - 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 (2"" 3"" 4"" 5"")Notice:1、Please allow 1-3cm error due to manual measurement.Pls make sure you do not mind before you bid.2、The color may have different as the difference display, pls understand."