10.7mm Mini Drill Bit Set 3.175mm Shank Carbide PCB Drill Bits for Drilling Print Circuit Board Drilling Tools 10pcs/boxSuitable Materials1. PCB, normal FR-4, CEM-3 boards, environmental protection board, SMT, CNC, molds, plastic, stainless steel and precision hardware processing;2. Circuit board, carbon fiber, composite board, and so on.Features:Specification:Type: PCB Drill BitMaterial: CarbideDiameter: 0.7mmShank: 3.175mm(1/8'')Cutting Length: 9mmOverall Length: 38mm 1. Precision machining by high accurate equipment; 2. With good milling and cutting performance, ensuring high efficiency; 3. High hardness, wear resistance, and intensity; anti-bending; 4. To removing chips, with big space and small resistance; Smooth chip removal, less heating , to reduce pollution; 5. Sharp cutting edge, reduce cutting force, lower breaking rate and improve the quality of hole wall;6. Symmetrical cutting blade, help to high effective cutting, avoiding drilling offset. Department Unisex Adult Item Weight 7.8 ounces Manufacturer ZYZFLDFHzyz Item model number ZYZFLDFHzyz Package Dimensions 1.18 x 0.79 x 0.39 inches