DD73

Dense Drill [AO]　φ7.3/ L=10

DD63

Dense Drill [AO]　φ6.3/ L=10

DD53

Dense Drill [AO]　φ5.3/ L=10

DD48

Dense Drill [AO]　φ4.8/ L=10

DD43

Dense Drill [AO]　φ4.3/ L=10

DD39

Dense Drill [AO]　φ3.9/ L=10