Each slip segments are castings with an extra long back to provide maximum support to the circular button gripping elements. Full wraparound design and circular buttons assure positive holding and slip setting. Drill collar slips are flat on top to accommodate the MP clamp. All drill collar slips have an API taper of 4"/ft on the diameter. There are three types of DCS Drill Collar Slips: S,R and L. They can accommodate drill collars from 3" to 14" OD. The handling sizes can be adjusted by changing the inserts or slip body.