Spade Type	Thread Shank Size	Drill Bit Diameter	Flushing Hole Diameter
Centre Flush	1/2" Whitworth	27mm	4mm
	M16	27mm	8mm
Extra Flush	M16	27mm	5m

General Features

A general purpose rotary drill bit for wet drilling which is suitable for medium thrust applications. Water flushing is through the centre hole in the drill bit body for centre flush bits, and through centre hole and two side flush grooves for extra flush bits.
Good penetration in medium to hard rock, it still stands up well in both thrust and impact applications.
The small drop centre bit uses a time proven carbide insert, has a neutral front rake and provides good wear resistance for most types of conditions.
The drill bit body is specifically designed for clearance of rock cuttings. The body is made of high tensile abrasion resistant steel.
Reference should be made to DSI’s "Practical Guide to Rock Bolting" highlighting installation problems associated with collaring the hole, angle bolting, hole diameter and depth.

Packaging

Supplied in plastic pails containing 50 drill bits.

Notes

Only DSI rock bolt components should be used in order to obtain full performance of the bolt system.
DSI's Mining Products Division is Quality Assured to ISO 9001:2000, Registration No.QAC/R61/0315.

PRINTED December 2006: All dimensions, weights, quantities and specifications are those applicable at the time of publication and may be amended from time to time.