HPHOPE, make life better!

Specifications:
Size:
1 × Masonry Drill Bits 5/32"
1 × Masonry Drill Bits 3/16"
4 × Masonry Drill Bit 1/4"
2 × Masonry Drill Bit 5/16"
1 × Masonry Drill Bit 3/8"
1 × Masonry Drill Bit 1/2"
Set Includes: 10Pcs Masonry Drill Bits Set
Material: Industrial-Grade Alloy YG6X
Shank Type: Hex shank
Packing: Plastic case

Features:
1. 1/4” Hex Shank fits into all power tools, with lock-in quick change chuck
2. Double design of cross arrow and spiral groove, accurate positioning and easy chip removal, decreases friction and heat for faster drilling performance, easy to penetrate various materials
3. Carbide drill bit is made of industrial grade alloy YG6X, stronger wear resistance, durability and long life

Instructions for use:
1. Keep the drill bits vertical to the object when drilling, Be sure to make both bit and work piece stable. Tilted bit is prone to break during drilling
2. Control Speed and Pressure, When using bits with a power drill, it's recommended to use them with low speed and drilling pressure
3. Drilling metal will accumulate an amount of heat. Necessary to use cooling liquid during drilling to keep the bit cool
4. Wide Application, concrete drill bit set, ideal for drilling holes in bathroom tiles or walls, can easily drill holes in tile, concrete, brick, glass, ceramic, granite, wood.

Safety instructions:
1. Always wear safety goggles and safety items when drilling
2. When using the drill, to reduce cracking, use water to cool and control the drilling speed
3. Examine the bits before use for cracks or chips, Do not use damaged or bull bits