HEDA 1/4" Hex Shank HSS M35 Cobalt TiAlN Countersink Drill Bit 90 Degree Deburring Chamfering Hole Cutter For Stainless
https://www.vogueparade.com/shopping/EN/100006468/1/1005003555660873/heda-14-hex-shank-hss-m35-cobalt-tialn-countersink-drill-bit-90-degree-deburring-chamfering-hole-cutter-for-stainless//