Rural Max Diamond Core Bit 178 x 400mm
A 178 mm diamond core bit for clean, round holes through reinforced concrete, brick and stone. 15 diamond segments are laser welded to the barrel, and the 400 mm working length gets through thick walls and slabs in one pass.
Why customers choose it
- 178 mm cutting diameter
- 15 laser-welded diamond segments
- 400 mm working length
- 1-1/4" UNC thread
- Standard segments for general-purpose coring
Specifications
- Diameter: 178 mm
- Working length: 400 mm
- Segments: 15
- Thread: 1-1/4" UNC
- Construction: Laser welded
- Model: RM-DC178
In concrete, the RM80 handheld core drill cores up to 80 mm, so a 178 mm hole in concrete needs a stand-mounted rig such as the RM205 2400W core drill on stand; in brick the RM80 goes up to 200 mm. Nearby sizes: 66 mm, 76 mm, 110 mm. All core drills and bits.
Questions we get asked
Will it fit my core drill?
It has a 1-1/4" UNC thread, the common fitting on diamond core drills such as the Rural Max RM80. Check your drill's spindle thread before ordering.
Wet or dry drilling?
Use water cooling where your drill supports it (the RM80 does): it keeps the segments cool, clears the slurry and makes the bit last longer.
Delivery or pickup
We deliver Australia-wide from our Derrimut warehouse in Melbourne's west, usually dispatched within 24 hours on business days. Heavy items go by courier or freight; anything over 30 kg needs a tailgate (lifting) service, and if that adds a charge we'll let you know after you order. Prefer to collect? Choose Pickup at checkout and collect free from 24A Park West Drive, Derrimut. See how click & collect works.
See the full Rural Max range of pumps, tanks, hose and tools at Nightingale Superstore.
Shipping information
- We deliver Australia-wide from our Derrimut warehouse in Melbourne's west.
- Orders are dispatched within 24 hours on business days. Most arrive in 2 to 7 business days; remote areas can take a little longer.
- Every order is tracked, and we email your tracking details as soon as it ships.
- Shipping is calculated at checkout from your postcode and the size of your order, so you see the full price before you pay.
- Orders up to 21 kg go by Australia Post; heavier and bulky items go by courier or freight. Items over 30 kg need a tailgate (lifting) service. If that adds a charge, we'll let you know after you order.
- Prefer to collect? Choose Pickup at checkout and collect free from 24A Park West Drive, Derrimut, usually within 24 hours. How click & collect works.
Returns & warranty
- Faulty or not as described: contact us within 30 days and we'll cover return postage where necessary. Your rights under the Australian Consumer Law always apply.
- Warranty: products come with the manufacturer's warranty. Where we know the period, it's listed in the product description. Contact us first and we'll advise you on the next steps.
- Change of mind: please choose carefully. Change-of-mind returns are at our discretion, within 30 days, for items that are unused, in their original packaging and resalable. Return postage is at your cost; a 10% fee applies to unused, sealed items and a restocking fee of up to 20% if the box has been opened or the item used.
- Questions? Call 03 9369 4277 (Monday to Friday, 9am to 5pm) or contact us.
