hydraulic auger bits without leading edge

{"cid":"91121595","title":"Roller Bits Core 8 1\/2\" 9 7\/8\" Rock Drilling Bucket Pile Tool","imgUrl":"https:\/\/img.chinax.com\/nimg\/bb\/21\/f3d3750bc56ff3c4dd7d4a329ec3-200x200-1.jpg","attrs":{"Price":"Negotiate","Brand Name":"ROSCHEN","Model Number":"8 1\/2\" 9 7\/8\"","Minimum Order Quantity":"1 set","Certification":"ISO","Place of Origin":"CHINA","Supply Ability":"1000000 pcs","Packaging Details":"wooden box","name":"Hydraulic Rotary Drilling Tools","Item":"Drilling Buckets","type":"Core barrels","Use":"Hydraulic Rotary drilling","Tools":"Piling & Foundation Tools","Using":"For Piling & Foundation drilling","model":"Drilling Bucket with Rock Drilling Teeth","China supplier":"piling drill bit, piling drill bit Suppliers","China factory":"China Pile Foundation Rotary Drilling Bucket 500-2500mm","Type no":"ROTARY DRILLING BITS AND DRILL STRING TOOLS","Usage":"Drilling Auger"}}