These drill bits are, and they have high abrasion resistance&long service life. these drill bits can speed up the process of drilling and chip removal.And the round shank is suitable for most types of hand drills and drills.
eBay
BGTEC 10pcs/Box Round Shank Diamond Drill Core Bits Granite Marble Tile Masonry Vacuum Brazed Mini Dry Drilling Bits Dia 6/8mm
Aliexpress UK
3mm Twist bit, 160mm total length. Material: HSS. Twist drill bits are the most common type of drill bit used. Twist drill bits are commonly used to drill holes with hand operated drills, standalone drill presses, or lathes.
eBay
EZARC 5PCS Countersink Drill Bit Set for Metal, 1/4 Inch Hex Shank Countersunk Bits 82 Degree 5 Flute, 1/4” 3/8” 1/2” 5/8” 3
Aliexpress UK
Provide strong durable performance compared to typical HSS drill bits. 5 x HSS twist Drill Bit set. Material: HSS. Drill Size: 2mm,3mm,3.5mm,4mm,5mm. High-speed steel drill bits. Uses: Can be used for wood, plastic, aluminum, iron drilling.
eBay
5 Flute Metal M35 Cobalt Countersink Drill Bit Set 82° 5pcs 1/4" Hex Shank Countersunk Bit Set 1/4” 3/8” 1/2” 5/8 With Holder
Aliexpress UK
3pc 400mm Long Masonry Drill BIT Set 8mm 10mm 12mm, For Brick Concrete, Block, Stone & other hard materials. A masonry drill bit is designed for drilling into harder materials such as concrete, block and stone.
eBay
6PCS Metric Titanium Drill Tap Combination Bit Set 1/4" Hex Shank HSS Screw Thread Bit Thread M3 M4 M5 M6 M8 M10 Taps Tool
Aliexpress UK
All our goods are dispatched in plain grey sleeving, a box or a jiffy bag so that goods inside cannot be seen. Drill bits in varying sizes. Each price is for one drill bit of that size. The size is the tip of tip on the end of the drill bit.
eBay
KSEM SE 3D 5D 7D 8.5D 10D 12D Extended U Drill 12.5-40mm high precision crown bit interchangeable tungsten carbide bit insertion
Aliexpress UK
The IRWIN® Long Series Blue Groove 4X Flat Bits have a patented groove point, and cutting edge designed to cut and not scrape the timber 4 times faster than standard flat bits. The parabolic scoop optimises control and removal of wood chips. Increased relief angle from 12° to 17°. The shank is 400mm in length and 10% larger in diameter for added durability. 1 x IRWIN® Blue Groove 4X Long Flat Bit 12 x 400mm.
eBay
M14 Thread Diamond Beveling Chamfer Bit 38/50mm Cone Punching Expanding Drill Bit Grinding Wheel Ceramic Tile Chamferer
Aliexpress UK
Drill Size: 2mm,3mm,3.5mm,4mm,5mm. 5 x HSS twist Drill Bit set. High-speed steel drill bits. Provide strong durable performance compared to typical HSS drill bits. Uses: Can be used for wood, plastic, aluminum, iron drilling.
eBay
Original Worx WA1149 Drill Bits Set with Phillips Hexagon Torx Extend Rod Twist Sleeve Hole Bit
Aliexpress UK
Flute length 268mm. The flutes are ground all the way down so they are sharp all the way down the fluted part and perfectly concentric, leading to a clean hole, vibration-free drilling and longer drill bit life than rolled (HSS-R) bits which are only sharp on the tip.
eBay
6-25mm Woodworking Round Bead Cutter Bead Drill Bit Buddha Ball Router Bit Milling Cutter Woodworking Tool Set
Aliexpress UK