Specifications   1.Core drills for concrete 
2.Core bit manufacturer 
3.Fast & Accurate open 
4.Long lifespan 
5.SGS, ISO9001:2000, BV 

  Diamond drill bit for stone Diamond Core Drill Bit is a cylinder used for cleaning and fast while extracting the material. 
Small size of core bit  uses for sink  or pipe/ faucets hole drilling.
Big size of core bit used for plunge cutting out materials of concrete.   Parameter

Diameter mm	Segment Height	Connection	Working Length
	mm		mm
6-18	8-10	M14, 5/8"-11, G 1/2" straight shank	60-110
18-400			60-500
Other specifications are available upon request

  Mainly used for construction, such as frilling holes in stone and concrete wall, processing hole for air conditioner, pipe installation...   Details show   Big size:      ABOUT US
     
1. TT, western union, Money Gram and PayPal
2. 100% payment before delivery
3. To the Bulk order, the L/C is also can consider  
SHIPPMENT
Delivery time:  Within a week after payment
Transport ways choose:
a. Urgent order with less weight or samples Sunny recommend express service.
b. Normal (regular) orders which weight over 45kgs Sunny recommend Air Cargo.
c. Big diameter saw blades or heavy weight Sunny recommend Sea Cargo.

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For expert advice, regarding questions about our company or concerns SUNNY products (diamond tools) please contact us through e-mail or link on: sunnytools.en.alibaba.com/company_profile.html