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Tungsten carbide Casing Shoes for softer formations.

Sawtooth - Aggressive cutting speeds in softer formations.

Crackerjack - Moderate cutting speeds in medium formations.

Popcorn - Universal application for soft to medium formations.

Casing Shoes where diamonds are needed:

Impregnated -Universal application for hard to very hard formation.

Surface Set - Moderate cutting speeds in hard formations.

DRILLERS SERVICE, INC. HICKORY, NC USA 800-334-2308, EXT. 230