12Pcs Diamond Core Drill Bit Set in Aluminum Box for Brick Wall Asphalt Reinforced Concrete

5 Pcs Hole Saw: 38mm, 52mm, 65mm, 117mm, 127mm
1 Pc SDS Plus Arbor: 10mm x 115mm
1 Pc Hex Arbor: 12mm x 88 mm
1 Pc Sds Plus Extension Adaptor: 10mm x 240mm
1 Pc Hex Extension Adaptor: 12mm x 240mm
1 Pc Pilot Drill: 10 x 200mm

1 Pc Guide Rod: 10 x 200mm
1 Pc Drift Key: 8*70mm

Straight segment(Turbo Segment, Rooftop Segment, M type Segment, Crown Shaped Segment 

                             and N-slot M Type Segment are available)

1.Very high diamond concentration gives maximum footage and drilling speed in all types of drilling applications.
2. Use water to cool down the bit is highly recommended to extend their lives.
3.Suitable for core drilling of reinforced concrete, brick wall core drilling, air conditioning installation, drilling of pipelines, road signs, highways and other outdoor projects.
4.Ideal for both professional contractors and DIY users.
5.Can be used on SDS or normal hand drills.Must not be used on Percussion/Hammer mode.

6.Please do not use diamond cores larger than 78mm in diameter with sds plus drills as this may result in damage to the power tool or sds adaptor.