製品説明
EDH60 (patented) loaded spring drifter. Powerful blow generated by spring force excerts excellent boring capabily superceeding others of the same class. Back-hammer structure effective on multi-layer/fracture zone is equipped as standard.
製品特徴
● Super light-weighed EDH60 (Patented) type drifter loaded.
● Centralizer supporting up to 133mm pipe.
● Stable operation has been made possible even for vertical posture by developed frame of low center of gravity.
● Covering a wide range from −7° to vertical 90°.
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