Wet Diamond Core Drill Bit
Wet-cutting diamond core bits for drilling clean, accurate holes in reinforced concrete, brick and stone. Water cooling keeps the segments sharp and extends bit life; threaded or hex connection for hand drills and drilling rigs.
| Diameter | 35 / 52 / 68 / 76 / 82 / 108 / 160 mm |
|---|---|
| Length | 150 / 300 / 450 mm |
| Connection | M14 / 1-1/4"-7 / hex |
| Application | Reinforced concrete, brick, stone |
| Cooling | Wet |
| Packaging | Poly bag / tube, color box |
| MOQ | 50 pcs per size |
About the Wet Diamond Core Drill Bit
A wet core bit cuts a ring, not a hole full of dust: water carries the slurry out and keeps the diamond segments from glazing, which is why concrete coring is a wet process. The result is a clean, true hole through reinforced concrete with the rebar cut rather than pushed aside.
Typical applications
- Reinforced concrete coring — Soil stacks, ventilation and service penetrations through slabs and walls.
- Brick and block — Clean holes for pipework where a chisel would spall the face.
- Stone and hard masonry — Anchor and fixing holes that need a straight, accurate bore.
How to choose the right specification
- Diameter by service — 35–52 mm for conduit and small pipes, 68–108 mm for soil stacks, 160 mm for ventilation and large services.
- Barrel length — 150 mm for block and thin walls, 300–450 mm for walls and floors where a single pass is faster than an extension.
- Connection — M14 for angle grinders and small rigs, 1-1/4-7 for core drilling rigs, hex for hand drills. Wrong connection is the most common ordering error.
Supply, packing and OEM
Poly bag or tube with a colour box, 50 pcs per size per size. Crowns are laser welded to the barrel on our Dr. FRITSCH machine from Germany, then each bit is checked for run-out — a barrel that wobbles at the start ruins the hole and the bit. OEM barrel printing and box artwork available.
Standard packing is poly bag / tube, color box, minimum order 50 pcs per size per size, with mixed sizes accepted on a first order. Bulk orders typically ship within 25–40 days after deposit, FOB Shanghai or Ningbo — about 2.5 hours from our workshop in Danyang.
Most of this item ships to Canada, Europe, Australia, Japan, the Middle East and South America. Tell us the destination market and we match the sizes, thread standard, marking and packing language it uses — metric for Europe, Japan and South America, imperial where the trade still buys in inches, and carton copy in the language your customers read — then quote FOB, CIF or DDP against your order size.
Related products: dry core bit, stone wet core bit.
Further reading: how to choose a diamond core bit — size, crown and thread · laser welded vs brazed diamond blades — what actually differs
More from Diamond Drill Bits
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