The 6 Best Diamond finger milling Bits (2023 reviews)

Fachlich diamond finger milling bit is the epitome of what a great bit should be. It works well shaping porcelain tile. It is designed to make holes but be designed to shape and enlarge existing holes. Not only does it work fast and almost effortlessly it also leaves a very smooth finish to the porcelain. It replaces the cutting/grinding disc on your grinder just remove the disc, the arbor adapters and screw the bit directly to your grinder with a 5/8" threaded stud. It has flats on it to facilitate mounting. It is great to enlarge holes for a sink. It is also used for grinding out larger holes in a granite countertop. It is very easy to control, and it does a great job.

Why We Like This:

Any standard grinder, and can be used with or without water
Come in handy for crafting with ceramic tiles
Excellent product to enlarge the hole
Enlarge, shape and round bevel existing holes in porcelain, hard ceramic, marble and granite

Best For metal: BTBLBITS Diamond finger milling Bit

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The btblbits diamond finger milling bit is the best suitable bit on the market today. This cutter eats up porcelain tile. It is designed to enlarge, shape and round bevel existing holes in porcelain, hard ceramic, granite and marble and is also suitable to easily create round side indentation necessary to accommodate pipes or electric wire lines. Just one standard core bit plus one BTBLBITS diamond finger bit can easily expand the holes and shape, meeting the needs of multi-function. It improves its wear resistance additionally it is made of premium diamond and durable metal.

It comes with 5/8-inch-11 arbor, 5/8"-11 thread, used on angle grinder, can't drill or make holes and be designed to shape and enlarge existing holes. It is perfect for enlarging hole around plumbing fixtures.

Why We Like This:

Great for granite, porcelain, ceramic or marble countertops, bathroom tiles
Any standard grinder, and can be used with or without water
Delivers what they promise

Best For jobs: Deckrkat Diamond finger milling Bit

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Compared with other bit in this category, the deckrkat diamond finger milling bit has a convenient design. This diamond hole enlarger bit works perfectly for enlarging or trimming holes in porcelain sink, limestone vanity sink top, ceramic bathroom sink, thick granite countertop, marble, stone, even quartz countertop which is harder. It includes 1 piece of 1 inch (25mm) vacuum brazed diamond finger bit, hole depth up to 50mm, with 5/8-11 thread for most angle grinders. It can make beautiful smooth holes.

This diamond finger bit is heavily coated diamond coated, both sides and the end, as a result, it can grind wet or dry, no chips, scratches or bumps. It is great for installing new bathroom sink. It is perfect for jobs to enlarge, and shape circular holes, drain holes in tiling projects in bathroom and kitchen to fit tiles perfectly around pipes, faucets, shower valves.

Why We Like This:

A tool to save you time and money
Good investment for long term

Best For glass: Gytycatah Diamond finger milling Bit

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate bit. The gytycatah diamond finger milling bit is exactly that - it's a simple bit that hits all the right notes. Durable metal and premium diamond provide longer working life. This diamond finger bits are designed to enlarge, shape, trim and round bevel EXISTING HOLES in porcelain tile, marble, ceramic, granite, etc. It fits on a 5/8"-11 thread angle grinder and can be used with water or not, very easy to operate. It is suitable to easily shape side indentation required for pipes or electric wires. The high hardness and heavily coated diamond with vacuum brazed technology ensure more effective working performance and precise hole finish.

The diamond milling bit is NOT RECOMMENDED FOR DRILLING HOLES, but for enlarging, shaping and trimming EXISTING HOLES.

Why We Like This:

Relieve rough holes in ceramic and porcelain tiles
Provides a smooth & precise hole finish
Great for granite, porcelain, ceramic or marble countertops, bathroom tiles

Best For steel: SHDIATOOL Diamond finger milling Bit

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Not everyone likes to purchase bit for their daily usage, but the shdiatool diamond finger milling bit would be an anomoly. This diamond bits have 5/8"-11 thread, they are mainly used on angle grinder. It is designed to enlarge, shape and/or round bevel existing holes in porcelain, marble, granite and hard ceramic. It can be used on angle grinder, wet or dry using, the recommended speed is 6000rpm. It cleans up rough holes, edges, and edges.

Why We Like This:

Great thing for and tile, stone, or masonry
Good tool, for grinder w 5/8 arbor, cleans up rough holes, edges
Provide smooth drilling and great finishing
High quality diamond grit #50/60 and vacuum brazed tech

Best For plumbers: KURSTOL Diamond finger milling Bit

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The kurstol diamond finger milling bit should be able to handle its purpose and duties with ease. The High-Quality Diamond Powder with Strong Steel Body can Bring Excellent Working Performance, High efficiency, Faster, and Lasts longer. It is used to notch edges of tile to accommodate for pipes or wiring. You can easily produce many holes of different sizes with just one standard diamond core bit plus one diamond finger milling bit. It can be installed with any hand-held angle grinder 5/8-. It is great for plumbers, other conduits, tile installers or setters, contractors, electricians wireman or diy users.

Why We Like This: