Our ceramic tile hole saw set contains the following:
Φ6mm - 1/4" diamond drill bit, dry drilling.
Φ8mm - 5/16" diamond tipped drill bit, dry drilling.
Φ10mm - 3/8" diamond core drills bit, dry drilling.
Φ25mm - 1" diamond hole saw, with slotted sides, wet and dry drilling both OK.
Φ35mm - 1-3/8" diamond hole saw, with slotted sides, wet and dry drilling both OK.
Φ45mm - 1-3/4" diamond hole saw, with slotted sides, wet and dry drilling both OK.
Φ50mm - 2" diamond hole saw, with slotted sides, wet and dry drilling both OK.
Φ65mm - 2-1/2" diamond hole saw, with slotted sides, wet and dry drilling both OK.
10mm - 3/8" diamond finger milling tool.
50mm - 2" diamond beveler chamfering bit.
A 6mm drill bit made of high speed steel and alloy.
A Hex Shank Adapter for drills, 5/8"-11 thread to 3/8" hexagon shank.
An SDS threads adaptor, convert 5/8-11" female arbor to SDS shank.
A storage case. No instructions.

Our diamond hole saw bit kit has a good selection of common sizes. These tile hole cutter drill bits are used in a wide range of applications. These tile hole drills are made to fit on an angle grinder, coming with an SDS bit adapter and a Hex bit shaft for use with electric drills.
The 1/4 inch, 5/16 inch, 3/8 inch diamond drill bits are hollow at the top, they are filled with wax. The maximum depth of cut is 32mm. These "dry" diamond bits are loaded with wax in the core, when you're drilling, the wax melts and lubricates the bit, so these diamond hole drill bits can work without water. You could use this diamond kit to drill holes on the containers around your garden, or install mirror, picture frame and shelf on marble backsplash and porcelain bathroom wall.
The 1 inch, 1-3/8 inch, 1-3/4 inch, 2 inches, 2-1/2 inch diamond hole saws are hollow with no centering tip. The maximum depth of cut is 45mm. You could use these diamond core bits to install things in your quartz and granite countertop, cut holes in sink, replace bathroom faucets, and drill holes in ceramic tile shower for your bathroom remodeling project.Make sure you can keep the rock from moving while you drill, and you could let water flow over the project while you are working to keep the bits cool and dust down.If you are not able to keep the diamond saw steady on the surface, we suggest that you could try to come in slowly at high RPM on an angle, like 45 degrees, and get a small portion of the bit to dig into the work piece. When it has, slowly straighten the drill and then proceed to cut it down into the work piece.
The 3/8 inch diamond finger milling tool is usually used to grind holes, core existing holes bigger, widen, clean out a rough cut, and enlarge holes. You could use this diamond milling bit to enlarge drain holes in ceramic pots, enlarge the center hole on your bathroom sink, and widen a hole for your shower head. This is a good grinder wheel to work on stone.
The 2 inch diamond beveler chamfering bit tool isn't intended to bore holes in anything, but, rather, to chamfer, smooth or slightly enlarge previously bored holes. This diamond grinding bit is usually used to smooth out edges on granite countertops. It chamfers up to 2" in diameter. This diamond chamfer bit can help with round cuts around shower pipes, helps to clean out tight corners where the angle grinder struggles. It can be used in wet or dry applications depending on the materials you are working with. This bit is usable in angle grinder or it can be chucked in a drill using the included adapter.

Production Tips:
If you would like to extend the life of the bit, you could stuffed a bit of wet sponge inside and keep the bit wet with a spray bottle. They will make nice clean holes for you. Using water while drilling can help prevent chipping and to keep a clean hole.
We recommend trying in a test piece several times to get used to the tool and cut method you want to use.
The drill bits are hollow with no centering tip, you need to hold the bit at an angle to create a virtual center. You could start at a slight angle and then rotate to 90 degrees.
When using this diamond drill bits set, you could make a template by yourself. Drill a hole in a piece of plywood using a wood bit and then used that as a template to drill thru.
These bits are intended for porcelain, ceramic, marble, brick, clay pots, and other similar materials, exclusive of wood, tempered glass, rubber, metal, and plastic. The plastic might melt and gum up the bit, which would make the bit useless for further use.
There are a lot of videos on YouTube about how to use this tool to drill granite and other materials.