7 Pcs Four-Flute Sawtooth Eccentric Drill Bit, Eccentric Twist Drill Bit Heavy-Duty FourEdged Serrated Carbide Tip Glass Masonry Drill Bit Set for Stone Concrete Wood Brick(3/4/5/6/8/10/12mm)
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Special Features
7-Piece Professional Eccentric Drill Bit Set: This comprehensive kit includes seven industrial-grade carbide bits (3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm) with universal hex shanks. The precisely calibrated sizing ensures perfect holes in various materials.
Advanced Carbide Construction: Engineered with carbide cross-head tips, these bits deliver exceptional hardness and heat resistance. The serrated four-edge design maintains sharpness through extended use, while the rust-resistant coating prevents corrosion in humid conditions.
Multi-Material Performance: Specifically designed to tackle concrete, glass, ceramic tile, and metal with equal efficiency. The eccentric cutting geometry reduces friction compared to conventional bits, while the cross-head tip prevents wandering on slick surfaces like porcelain or marble.
Precision Engineering Features: Incorporates three innovative technologies - dry eccentric positioning for accurate starts, four-flute chip evacuation for cleaner holes, and low-resistance helical grooves that minimize heat buildup. These features combine to deliver professional-grade results in both rotary and hammer drill modes.
Professional-Grade Application System: Includes usage protocols - water cooling for glass/ceramics (prevents cracking), 45° angle starts for tiles (avoids chipping), and variable speed recommendations for different materials.
Description
Specifications:
Name: Four-edged serrated eccentric drill bit set
Material: Carbide
Gross weight: 157.50 g
Packaging size: 15.2*7*1 cm
Packing list:
3-4-5-6-8-10-12 Four-edged serrated eccentric drill bit set