multi diameter m35 hss step drill bit spiral flute chip evacuation

{"cid":"91225487","title":"4 \u2013 12MM Spiral Flute Step Drill Bit Cobalt M35 Steel For Stainless Steel And Aluminum","imgUrl":"https:\/\/img.chinax.com\/nimg\/1a\/ef\/e7def221ab3acf7bbe0ff8c97d64-200x200-1.jpg","attrs":{"Price":"1.45$\/PCS","Brand Name":"XRTOOLS","Model Number":"4-32","Minimum Order Quantity":"200PCS","Delivery Time":"30-45days","Process":"Fully Ground","Hardness":"HRC65-67","Type":"Twist Drill Bit","Shank":"Hex shank","Size":"4-32","Point angle":"135\u00b0 degrees","Material":"HSS-M35","Surface":"oxid","Name":"hss cobalt Step drill bit","Use":"ceramic materials","Certification":"ISO9000","Place of Origin":"JIANG SU","Payment Terms":"T\/T, L\/C, D\/P","Supply Ability":"400,0000Pcs Per Mouth","Packaging Details":"Plastic box,Double Blister card"}}