Important Remind:The 1 3/8 Inch core bit's aerbor is 5/8"-11 Female Thread.NOT M14 Thread.
This pack carries (a)-(b):(a) 45 Pieces of 4" / 100mmm Diamond Wet Polishing pad for granite marble concrete travertine quartz:
9 X Grit 50 100 200,
7 X Grit 400,
3 X Grit 800 1500 3000,
2 X Grit 10000 and 1 Piece of 4" aluminum pad holder (5/8"-11 Female Thread arbor).

(b) 1 Piece of Premium Professional grade 1 3/8" or 35 mm diameter Diamond Core Bit Hole Saw with 9 mm segment height, 3.0 mm segment thickness, 4 1/5" overall Height and arbor 5/8" 11 (Made with Premium Diamond) works great on GRANITE, Marble, Concrete, Tiles, stone etc.

Specifications
- Professional Grade 1 3/8" or 35 mm Diameter Wet or Dry diamond drill bit hole saw core drill bit
- Drills/Cores through Concrete, Granite, Masonry, Stone, Marble
- Segment Height 9 MM, Width 16 mm, Thick 3.0 mm
- Optimal RPM 900
- Arbor 5/8" 11 T