[DETAIL] 50-Piece Titanium Coated Twist Drill Bit Set - Straight Shank for Wood & Plastic (1-3.0mm) Precision Drilling Performance: Advanced TiN Coating: Titanium nitride surface reduces friction by 45%, extends bit life 3x, and prevents resin buildup in wood/plastic composites. Wood-Optimized Geometry: 118�� split-point tip starts clean holes; deep flutes rapidly eject chips to prevent binding in softwoods, plywood, and acrylics. Full Size Spectrum: Graduated metric sizes (1.0�C3.0mm in 0.5mm increments) cover delicate crafts to heavy-duty joinery��no missing sizes. Technical Specifications: Kit Includes: 50�� TiN-coated drill bits (1.0�C3.0mm) 1�� Drill size reference chart ?? Critical Usage Guide: Wood: Clamp workpiece, drill at 1,500�C2,500 RPM with firm pressure. Plastic: Reduce speed to 800�C1,200 RPM to prevent melting; use backing board. Never: Use on metal, stone, or cement Exceed 3,000 RPM Apply excessive lateral force Set Contents: ? 1.0, 1.5, 2.0, 2.5, 3.0mm (10 of each size) ?? Pro Tip: For laminated particle boards, wrap drill bit with masking tape at target depth mark to prevent over-drilling. The following are all the sales specifications of this product: [ATTRIBUTES] - Hign-concerned Chemical: None - Origin: Mainland China - is_customized: Yes - Hign-concerned Chemical: None - Origin: Mainland China - is_customized: Yes - Certification: CE - Model Number: Extractor Drill Bits Set - DIY Supplies: Woodworking - Material: High Speed Steel - Type: Twist Drill Bit - Use: Wood Drilling - Length: 1mm,1.5mm,2mm,2.5mm,3mm - Hign-concerned Chemical: None - Origin: Mainland China - Model Number: Extractor Drill Bits Set - Material: High Speed Steel - Use: Wood Drilling - is_customized: Yes - DIY Supplies: Woodworking - Type: Twist Drill Bit - Length: 1mm,1.5mm,2mm,2.5mm,3mm