Kyocera Replaceable Drill Tip DA1890MGM PR1535, manufacturer part number TLC06546.
Specifications: Cutting Diameter: 18.90 mm (0.7441 in); Insert Holding Method: Screw; Old Material Number: 8845910; Number of Cutting Edges: 2; Cutting Diameter Minimum: 18.90 mm (0.7441 in); Cutting Diameter Maximum: 18.90 mm (0.7441 in); Insert Size: 1890; Hand Direction: Right; Insert Style: DA; ANSI Designation: DA1890MGMPR1535; Chip Breaker Type: GM; ISO Designation: DA1890M-GM; Machining Operations: Drilling; Insert Grade: PR1535; Workpiece Material: Steel, Stainless Steel, Cast Iron; Coating Process: PVD.
Material: Carbide. Coating/Finish: MEGACOAT NANO. Series: DRA. Unit of measure: Metric.