best rotary tool for the money

{"cid":"91207627","title":"3055 Deep Drilling Rig Tool Precision Engineering Bullet Teeth For Augers","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/10\/21\/a8738bf276da3a753e2eeeaefa8f-200x200-1.jpg","attrs":{"Price":"US$ 6-6.5 Set","Brand Name":"APIE","Model Number":"bullet teeth","Minimum Order Quantity":"20 set","Delivery Time":"5 days","Place of Origin":"China","Packaging Details":"Wooden packing","Payment Terms":"T\/T, L\/C, D\/A, D\/P, Western Union, MoneyGram","Supply Ability":"100 Sets per Month","Marks":"We Can Do Any Sizes Bits For Customers'request.","Application":"Rotary Drilling Rig Tools:bucket,auger,core Barrel...","Model":"B47K22","Processing Type":"Foring","Name":"Bullet Teeth\/Round Shank Chisel\/Rock Bits","MOQ":"20pcs","Type":"3050,3055,3060...","Alloy head size":"9-30mm"}}