Best Side Cutting Drill Bits for Clean, Precise Holes
When you need clean, accurate holes across wood, plastic, and thin metal, side cutting or serrated drill bits are a strong choice. This guide highlights five top options that balance durability, speed, and reduced walking. Each pick is suited to different buyers—from DIY hobbyists to woodworking pros—depending on drill compatibility, bit coarseness, and the need for serrated action. Read on to compare sizes, coatings, and design features to decide which set fits your projects and budget best.
Product Comparison Table
| Product | Sizes | Coating | Best For |
|---|---|---|---|
| Rocaris 8 Pack 3-10mm Titanium Coated HSS Twist Drill Bits | 3–10 mm | Titanium coated | General DIY, mixed materials |
| JONMON 8 Pack Titanium Coated HSS Twist Drill Bits (3–10mm) | 3–10 mm | Titanium coated | Wood, plastic, light metal drilling |
| JONMON 10 Pack 3-13mm Titanium Coated HSS Serrated Twist Drill Bits | 3–13 mm | Titanium coated | Wider range, demanding cuts |
| Hariendny 8 Pack 3–10mm Titanium Coated HSS | 3–10 mm | Titanium coated | Versatile wood and plastic work |
| Zelphvt 8 Pack 3–10mm Hex Shank Serrated Cutting Bits | 3–10 mm | Titanium coated | Torque control, hex shank drilling |
Rocaris 8 Pack 3-10mm Titanium Coated HSS Twist Drill Bits
Best for general purpose drilling across wood, plastic, and thin metals. The 8 included sizes cover the most common needs (3, 4, 5, 6, 6.5, 7, 8, 10 mm). Titanium coating extends edge life and reduces heat buildup, helping maintain speed and accuracy. The 135° split point minimizes wandering, making starts more precise. This set is ideal for DIYers who want a reliable, all-around kit with quick-start capability. Choose this if you want a single, versatile set for a home workshop.
Best for: hobbyists and small shop users needing a broad size range without swapping bits mid-project.
Caution: Performance depends on drill alignment and feed rate; going too fast can still cause bit wear on very hard materials.
JONMON 8 Pack Titanium Coated HSS Twist Drill Bits (3–10mm)
Best for tasks requiring serrated cutting action to reduce friction and increase accuracy in wood, plastic, and thin metal. The 8 pieces span 3–10 mm with a 135° split point and straight shank to prevent walking. The serrated design enhances controlled drilling and can help when starting holes in harder materials. This set suits woodworkers or hobbyists who appreciate rapid starts and a compact set for small to medium projects.
Best for: woodworkers who want improved start precision and stable performance with a compact 8-piece selection.
Caution: Serrated action can be less forgiving on very soft plastics; apply steady pressure to avoid melting delicate materials.
JONMON 10 Pack 3-13mm Titanium Coated HSS Serrated Twist Drill Bits
Best for pros needing a wider size range with serrated cutting to handle larger or tougher holes. The 3–13 mm set adds larger sizes for thicker material work while maintaining the titanium coating for extended edge life. The 135° split point and straight shank help keep a clean start and reduce wandering. This set is well-suited for more demanding woodworking or light metal tasks where a broader hole size is beneficial.
Best for: professionals who require a broader size spectrum in a serrated design for diverse projects.
Caution: Larger diameters require careful pilot hole planning and stable drill speed to avoid bit deflection.
Hariendny 8 Pack Titanium Coated HSS Twist Drill Bits (3–10mm)
Best for versatile, all-around use with reliable performance across common project materials. The eight sizes cover the essential 3–10 mm range, and the titanium coating supports longer life and sharper edges. The fully ground spiral flute design reduces friction and heat for cooler, faster drilling. Suitable for DIY sellers and small workshops that need dependable results across multiple materials.
Best for: mixed-material projects requiring a dependable, broad-size set in one kit.
Caution: Heat buildup can still occur with dense materials; use moderate feed rates and pause to cool if drilling deep holes.
Zelphvt 8 Pack 3–10mm Hex Shank Serrated Cutting Bits
Best for quick-start drilling with hex shank compatibility and serrated cutting action. The eight sizes from 3 to 10 mm cover common hole sizes, and the hex shank helps prevent slippage in quick-change chucks. Titanium coating offers durability for wood, plastic, and light metal tasks. Use this set when you want a hex-shank option that stays firm under torque and a serrated edge for controlled drilling.
Best for: users who need secure hex-shank bits with reliable serrated action for a range of materials.
Caution: The serrated design may leave rougher edges on very soft plastics; pair with proper feed and clean up burrs after drilling.
Buying Guide
- Material and coating: Titanium-coated HSS bits resist wear and reduce heat, extending edge life for repetitive drilling. This matters most when drilling harder plastics, aluminum, or thin metals.
- Tip design: A 135° split point helps starts stay centered and reduces walking. Full-ground spiral flutes minimize friction and heat for smoother, faster drilling.
- Shank type and compatibility: Straight shanks work with most cordless and corded drills, while hex shanks help prevent slipping in impact drivers or quick-change chucks. Choose based on your drill setup.
- Size range: For general use, sets covering 3–10 mm meet most tasks. If you frequently drill larger holes, consider 3–13 mm sets.
- Material compatibility: Wood, plastic, and thin metal are common targets. For hard metals, you may need specialized bits with higher hardness and different geometry.
- Budget vs. durability: Titanium-coated HSS offers a balance of affordability and longevity. For high-volume production, evaluate set durability and edge retention over time.
Frequently Asked Questions
- What is the advantage of serrated cutting bits? Serrated edges reduce friction and help start cuts more aggressively, which can improve control in wood and soft plastics.
- Are hex shanks better than straight shanks? Hex shanks reduce slipping in impact drivers and quick-change chucks, offering stable starts in busy work environments.
- Can I drill metal with these bits? These bits are suitable for thin metal; for thicker or harder metals, consider higher-hardness tools designed for metalworking.
- How should I maintain titanium-coated bits? Keep bits dry, avoid overheating, and use proper drilling speeds to preserve coating and edge sharpness.
- Is there a size range I should prefer? A 3–10 mm range covers most everyday tasks; add larger sizes (3–13 mm) if you frequently drill bigger holes.
- What makes these sets a good buy for a home shop? They provide broad size coverage, durable coatings, and standardized shanks, enabling quick tool swaps and consistent results across common materials.