Slips used to safely set and hold drill collars. All goods of US Origin.Drill Collar Rotary SlipsContact Us to PurchaseDCS-S Available OD sizes: 4" - 4-7/8" OD 3" - 4" OD DCS-R Available OD Sizes: 5-1/2" - 7" 4-1/2" - 6" DCS-L Available OD Sizes: 11" - 12-3/4" 8-1/2" - 10" 8" - 9-1/2" 6-3/4" - 8-1/4"