Description  of  masonry  drill  bit  sizes:
High  Quality  Carbide  Tip 
Long  Drilling  Life 
Professional  Welded 
Heat  Treatment  Rod Hardness HRC40 to 45 
Good Service 
 Standard: DIN8039
Chrome Plated  Black&White  Masonry  Drill Bits for Contrete / Granite / Brick / Marble
Tip material : YG8 Carbide Tip 45# Carbon Steel 
Process: Milled ,  Rolled

Flute: Single or Double Fulte

Profesional Heat Treatment

DIN8039 CONCRETE DRILL
MADE OF HIGH CARBON STEEL WITH INDUSTRIAL GRADE CARBIDE TIP.
MILLED SLOW SPIRAL FOR QUICK,EASY DEBRIS REMOVAL.
SANDBLASTED SURFACE FINISH FOR ANTI-RUST.
SUITABLE FOR THE PROFESSIONALS
FOR USE ON ROTARY AND PERCUSSION DRILLS
FOR DRILLING IN CONCEETE,REINFORCED CONCRETE,BRICK AND BLOCK,MASONRY,ETC

DIN8039 UNIVERSAL DRILL BITS
GROUND CARBIDE TIP FOR PRECISE SPOT DRILLING.ALSO REDUCING NOISE LEVELS AND DRILLING PRESSURE
IDEA FOR DRILLING THROUGH LAYERS OF DIFFERENT MATERIALS.
FOR DRILLING IN MASONRY,TILE,WOOD,CHIP-BOARD,SOFT METAL AND PLASTICS

MASONRY DRILL-TAPCON STYLE
FOR USE WITH TAPCON STYLE CONCRETE ANCHORS AND SCREW
LIGHT TO MEDIUM HARD BUILDING MATERIALS
SIZE;3-1/2" TO 6-1/2'
WE HAVE DIFFERENT PACKING FOR SINGLE MASONRY DRILL AND MASONRY DRILL SET,WE HAVE PLASTIC BAG,PLASTIC
TUBE,SANDWICH PAPER PACKING FOR SINGLE DRILL,FOR SET,WE HAVE ALL KINDS OF PLASTIC BOX.