Drill pipe slips Type SD can accommodate drill pipes from 2-3/8 to 7 inch. They are classified as type Short(SDS), Medium(SDML), Extra Long(SDML).SDS slips are designed for shallow hole drilling, SDML slips are the perfect choice for all medium depth drilling and SDXL slips are designed for deep drilling. The slips are designed and manufactured in API Spec 7K and SY/T 5049 Slips for well drilling. It is suitable to handle the drill rods during the oil well drilling operations for the exploration of petroleum and natural gases ,It is an essential tool for coupling and uncoupling .