Specifications:

QCZ-1-4.5(y5 type Rock Drill)

QCZ-2-6.5(y6 type Rock Drill)

CQS-3.5

φ8*280 four pits

φ10*280 four pits

φ12*280 four pits

φ14*280 four pits

φ16*280 four pits

φ18*280 four pits

φ20*280 four pits

φ22*280 four pits

φ24*280 four pits

φ26*280 four pits

φ28*280 four pits

φ30*280 four pits

φ8*280 Two Pits and Two Slots

φ10*280 Two Pits and Two Slots

φ12*280 Two Pits and Two Slots

φ14*280 Two Pits and Two Slots

φ16*280 Two Pits and Two Slots

φ18*280 Two Pits and Two Slots

φ20*280, two pits and two grooves

φ22*280 Two Pits and Two Slots

φ25*280 Two Pits and Two Slots