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BTBLBITS Diamond Core Drill Bits Set - 8pcs Tile Hole Saw Kit (20/25/32/45/65/75mm) + 3/4" (20mm) Diamond Milling Bit with 3/8" Hex Adapter Package Content: 8pcs in total; 6pcs Diamond drill bits 3/4", 1", 1-1/4", 1-3/4", 2-1/2", 3" (20/25/32/45/65/75mm), 1pc 3/4" (20mm) Diamond Milling Bit, 1pc 5/8"-11 to 3/8" Hex Shank AdapterRecommended Machine: for Hand or Electric Drill and Angle GrinderThreads: 5/8"-11 ThreadedCutting Method: Dry/Wet, Wet Drilling could prolong workable lifeApplication Material: Porcelain, Tile, Marble, Brick, Stones, Granite, Masonry, Ceramic Diamond Grain and U-Shaped Chip Flute Design with Aluminium portable suitcase BTBLBITS Diamond Hole Saws Bits are made with steel and Diamond Grain with U-shaped chip flute designAluminium portable suitcase for easy storage and portability.Recommended Machine:the drill bits are usually suitable for Angle Grinder. Recommended speed 6000RPM, maximum speed 11000RPM. If you want to use electric drill or other machine, you can use Adapter in the package. Use electric drill: Recommended speed: 2000-5000RPM; Faster the RPM, Longer the drill bit's Working Life Diamond Beveling Chamfer bit with Hex shank 35mm Diamond Beveling Chamfer bit with Hex shank 50mm Diamond Chamfer bit 50mm with Hex shank adapter Diamond Chamfer Bit 20mm Diamond chamfer milling bit 6mm-25mm Diamond Milling Bit 10mm-25mm Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.4 out of 5 stars 352 4.4 out of 5 stars 352 4.4 out of 5 stars 352 4.4 out of 5 stars 352 4.5 out of 5 stars 109 4.5 out of 5 stars 109 Price $21.99$21.99 $26.99$26.99 $22.99$22.99 $13.89$13.89 $16.99$16.99 $20.99$20.99 Diameter 1-3/8" (35mm) 2" (50mm) 2" (50mm) 3/4" (20mm) 1/4"-1" (6-25mm) 3/8"-1" (10mm-25mm) Shank Hex Hex 5/8-11 and Hex 5/8"-11 Threaded 5/8"-11 Threaded 5/8"-11 Threaded Diamond Countersink Drill Bits 35mm Diamond Chamfer Bits 82mm Diamond Beveling Chamfer Bits - 50mm Diamond Finger Milling Bit 25mm Diamond Milling Bits 10mm Diamond Finger Milling Bits 20mm Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.4 out of 5 stars 352 4.4 out of 5 stars 352 4.4 out of 5 stars 352 4.5 out of 5 stars 109 4.5 out of 5 stars 109 4.5 out of 5 stars 109 Price $19.89$19.89 $49.99$49.99 $49.99$49.99 $21.99$21.99 $15.99$15.99 $19.99$19.99 Diameter 1-3/8" (35mm) 3-1/4" (82mm) 2" (50mm) 1" (25mm) 3/8" (10mm) 3/4" (20mm) Shank 5/8"-11 5/8"-11 5/8"-11 5/8"-11 5/8"-11 5/8"-11 BTBLBITS diamond core drill bits hole saws 2" diamond hole saws with hex adapter 1-1/2" diamond drill bit with hex adapter 1-3/8" diamond core drill bit with hex adapter 1" diamond hole saw with adapter
Package Content 8pcs in total; 6pcs Diamond drill bits 3/4", 1", 1-1/4", 1-3/4", 2-1/2", 3" (20/25/32/45/65/75mm), 1pc 3/4" (20mm) Diamond Milling Bit, 1pc 5/8"-11 to 3/8" Hex Shank Adapter
Materials CompatibilityDiamond drill bit set for Wet or Dry Drilling Shaping Enlaging Cutting on various materials, such as Porcelain Ceramic Tile Granite Marble Stone and so on
SturdyVacuum Brazed technology provides efficient working performance, faster drilling speed
Recommended Machine The drill bits are usually suitable for Angle Grinder. Recommended speed 6000RPM, maximum speed 11000RPM. If you want to use electric drill or other machine, you can use Adapter in the package. Use electric drill Recommended speed 2000-5000RPM; Faster the RPM, Longer the drill bit's Working
Conveniently Aluminium portable suitcase for easy storage and portability.Reasonable product collocation meets most work demands
These bits have some really sharp diamonds on them. Cutting through stone started right away, rather than slowly getting through an adhesive layer first. The bits even shimmer like a diamond ring, which I usually don't see on most diamond embedded materials. I think this means that there is probably a lot more diamond bits than most tools.The sizes seem perfect for kitchen sink holes. I tested out the 35mm for the soap pump hole. The smaller bits are really useful for getting small tubing through rock as well (or electrical)So far, the biggest issue I'm having is not the bits, it's needing additional tools to use them. I was hoping I could get a clean cut by slowly getting the bit to start cutting into the stone by starting the cut at and angle. But the bit's edge is not smooth enough (it bounces) to allow you to hold it still. It definitely starts cutting the stone right away. But it's very hard to manually control (this is not a poor design of the bits) If you tried to cut any circle without guidance, you'd have trouble. So you definitely need a circular brace to hold the bit concentric (so it doesn't walk over the surface, and potentially ruin the stone) I'm used to my circle cutters having a center guide bit (for other materials). So I will buy a circle guide and try again, and re-rate these bits.It's worth noting that the case is fantastic, and very much needed. Any time you have a set of tools like this, you definitely need a way to keep them safe from getting chipped, and to keep the set together. The case is very compact. So this tool doesn't take up too much storage space.Also, I do use the drill adapter. I find this method of drilling allows me to better control the speed. Angle grinder speeds can generate a lot of heat instantly. So the adapter is a really excellent component that most kits don't include. Use trickling water keep the bits cool as well. Water also keeps your lungs safe from rock dust, which is very dangerous.In short, these bits are aggressive and start cutting quickly. But you will almost certainly need a circle guide. The adapters and case are great additions I may not have bought if they weren't included. And now I wouldn't recommend getting a kit without them.
