BÌNH THƯỜNG

BÌNH THƯỜNG WITH BASE

CONICAL

CONICAL WITH BASE

SANDWITH WITH BASE

REINFORCED NOSE TO IMPROVE SPEED

THREE LAYERS(FIVE,SEVEN AND NINE LAYERS ALSO)

SANDWITCH TAPER

XLD98

U TYPE

STAIR TYPE

CORE DIRLL phân khúc

CORE DRILL RING

XLD99