ST58 Threaded Button Bits are the most important size for benching and long hole drilling underground, this type of rock drill bits manufactured by rock drilling tools factory ProDrill.

Diameter: 89mm, 93mm, 102mm, 115mm, 127mm

Skirt Body: retrac, and normal, straightrac

Face type: flat, uniface, drop center

Carbide Design: Dome, ballistic, semi-ballistic

Used in bench drilling, underground long hole drilling

To match extension MF rod, MM rod heavy duty top hammer.

ST58-93 Threaded Button Bit

Features:

ST-58 thread type is double thread design for easy knock off drill bit, ST-58 means diameter 58 mm with double T shape thread, thread distance 24 mm, this is extra heavy duty drill bit for jump top hammer. Drill rod use guide tube for a match.

ST58-115 Threaded Button Bit

18 Dome/Semi-ballistic carbide inserts ST58 Threaded drill bits with flat face design, 89 mm diameter with extension rod for heavy duty drilling.

Thread ST58 of Threaded Button Bit

A look inside of ST18 threaded button bit.

PDF For more details please watch PDF online: ST58 Drill Bits for Bench Drilling, Long Hole Drilling Underground Catalogue

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Q18-89-ST58-RC-Threaded Button Bit

Q18-89-ST58-RC-Threaded Button Bit

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