Diamond Coring Bits 
							
							
                            Harder rock types usually requires the use of
 diamond bits from the higher matrix groupings.
							
                            BROKEN rock types usually requires the use of
 diamond bits from the LOWER matrix groupings
                            
								
								- Group 100 - Coring bits for powerful high-torque drills
                       Drill very well in extremely abrasive rock
 
								- Group 200 - All purpose coring bits for high load drilling
                       Drill very well in fractured formation
 
								- Group 300 -  Coring bits for lower powered medium load drills
                        Drill very well in medium hard formation
 
								- Group 400 - Versatile durable high penetration coring bits
                       Drill very well in changing formation
 
								- Group 500 - High penetration coring bits in all rock types
                       Drill very well in fine grained hard rock
 
                            
                            EXCESSIVE HOLE DEVIATION usually requires the use of
 diamond bits from the higher matrix groupings.
                            
                            
                            a Less powerful DRILL usually requires the use of
 diamond bits from the higher matrix groupings
                            
							
							
							
							
							
							
							
							
                            
							
								
							
									
									
										
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