1. DIAGER Booster-plus HILTI TE-C3X HITACHI 3 Cutter Pro
4 Cutters axial (+), monobloc
Carbide tip welded on steel
Carbide tip brazed in steel
Carbide tip welded on steel
Forged body
Ground body
4 flutes
3 square flutes
3 flutes
Centering point
3 symmetric cutters, monobloc
3 symmetric cutters, monobloc Slotted tip
SDS-plus shank
Made in E.U.
Made in France
Made in Japan

2. Made in Germany
SDS-plus shank
DIAGER Twister-plus
BOSCH S4
DEWALT Extreme
DREBO 4-plus
ITW Bionic
Flat carbide tip
Centering point
Carbide tip
Carbide tip with concave edge
Asymetrical rim
Thick rim
Two flutes with central spiral
Two flutes
Two square flutes
Made in France
Straight head