Fangrui Product Details [hss Titanium Coating] These Small Drill Bits Classic Hss Construction For Reinforced Durability. The-premium Titanium Coating Offers Superior Resistance To-abrasion And . [automatic Chip Removal] These Small Drill Bits 2 Flutes Design That Helps Clear Chips And Debris Away, Decreasing Friction And Heat For A Faster, Cooler Drilling Process. [all-purpose Bits Set] Suitable For Soft Metal, Wood, Pvc ( To Wall). It Is Your Titanium Drill Bit Set For Diy Projects And Household Maintenance And Repair. [40 Pcs Combo Set] 40 Pcs Jobber Length Titanium Drill Bits In 4 Sizes From 3/64inch To 1/8inch(10pcs X 0.6mm, 10pcs X 1.0mm, 10pcs X 1.5mm, 10pcs X 2.0mm, Total 40 Pieces ) To Have Your Different Needs Covered And Increase Overall Productivity. [multi-purpose Use] Workshop Or Service Vehicles. Drills Accurate And Clean Holes In Thinner, Low Hardness Of Wood And Soft Metal Hole Processing, For Home Repairs And Light Jobs. Colour:silver Material:high Speed Steel + Stainless Steel + Alloy