Ordo Casus

petra frenum
replaceable cylindro conis
PDC BIT 4
oleum bene tricone frenum
dente petra frenum comminuti
cof
IMG_7779
IADC216 triconium bit
foramen opener
Gas bene tricone frenum
Gas bene terebro frenum
terebro frenum
p17
p15
p16
p14
p13
p12
p10
p9
p8
p7
p6
p4
p5
p3
p2
p1