- PREMIUM MATERIAL: 6542 HSS Carbide with a reinforced head that prevents bit cracking; Twist drill bit set made of hard and durable alloy, provides longer life.
- UNIQUE DESIGN: U type slot design with fast drilling dust remove, antiskid triangle handle allows the drill bit to be held tightly and stable in a power drill.
- WIDE USAGE: Spear pointed design strong tungsten carbide tip can easily penetrate various materials like tile, concrete, brick, glass, plastic, and wood, etc, and reduces breakout.
- DRILL BIT SET WITH 4 DIFFERENT SIZES: 6mm(1/4"), 8mm(5/16"), 10mm(3/8"), 12mm(1/2").
(TIP: When drilling hard material such as glass, porcelain floor tile, marble, granite, etc, please use water for lubrication.)