Name: PDC drill bolt wings Model: wings half a slice specifications: Φ25, Φ27, Φ28, Φ29, Φ30, Φ32, Φ36, Φ42 levels: Normal, Enhanced applicable formations: 6≤f≤12 Uses: used in mining and hydropower, transportation and other sectors bolting with wire mesh hole drilling. Features: life in the same rock drilling is 10-30 times more common alloy drill, at least to improve the efficiency of more than 50%, without grinding, reduce labor intensity, saving time.