Keystone Drill Logo

Your respected and most experienced
supplier of drilling equipment!

Casing Advancement Systems

Symmetrix & Elemex Overburden Drilling System

Epiroc Logo

Elemex System


Symmetrix product range is made to cover all drilling applications and has various solutions to suit different requirements.

• Permanent casing
• Retrievable casing
• Horizontal applications
• Drill through casing for rock sockets

Drill Through Casings


System with drill through pilot bit

1. Casing is installed until seated into bedrock.
2. Drill through pilot bit is unlocked from ring bit and after that pilot bit drills a rock socket. Drill string is pulled out from the hole.
3. Reinforcement element is installed and concrete poured into the hole.

• Casing sizes 3" – 48"
• Safe
• Economical
• Precise
• Productive

• Simple Design

Casing Drill Sizes

Permanant, retrievable and drill through solutions

Overburden Call Outs


                 Drill King

Drill King and Made In The USA Logo
Drill King System Casing

DK Casing Advance System

  • The Most Efficient Way of Carrying Casing Down-The-Hole
  • Made of Premium U.S. Steel for Strength and Durability
  • Innovative, Simple, Yet Proven Design
  • Available for Most Hammer Shanks
  • Superior Technology for Outstanding Performance

DK SPLIT-RING Casing Advance System

The Newest Split-Ring version of DK Casing Advanced System means increased productivity, longer life, and straighter holes.

DK Casing Advance System
Casing Hammer Shanks Chart




Everdigm Logo

DURAWING is a concentric overburden system designed for casing installation drilling range of 4" to 32" diameter hole, specialized through various formations into bedrock. The wing bits are enclosed on pocket area making it the most professional & efficient system in the market as it is free from clogging in loose overburden material while it goes down to bedrock. When the drilling starts, wing bits come out with unique cam sliding mechanism. The key feature of DURAWING is the self-actuating wing bit system that is reliable regardless of unpredictable ground conditions.

Features and Benefits
• Unique sliding mechanism leads to absolute workability
• Simple parts replacement
• Low running cost
• Same performance in horizontal drilling
• Prevent jamming with internal air exhaust
Durawing Casings



Mincon Logo

Mincon Group PLC was founded in 1977 in Shannon, Ireland. Mincon manufactures and distributes a range of precision engineered hard rock drilling tools for a variety of industries including Mining, Exploration, Waterwell, Geothermal, Construction, Horizontal Directional Drilling, Oil-Gas and Energy.


Mincon Overburden Casings
• DTH Hammers
• DTH Drill Bits
• RC Hammers
• Rotary Products
• Drilling Fluids
• Casing Advance Systems

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Keystone Drill Services, Inc.
184 Alisa Street
Somerset, PA 15501
800-221-0586 Toll Free
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