WT CASING is made with a heavy duty,
WT CASING is made with a heavy duty tapered thread, which provides increased strength and enables faster make-and-break connections. This casing is designed for repeated applications or when drilling in difficult formations. W-CASING is made with a lighter duty straight thread and is recommended for single use applications or when the casing will be left in the hole. Please contact your Hole Products representative to learn more about our rods and casings. (or call 1-800-465-1569).