***LISTING IS FOR THE INFINITE TRIPODS*** - Ballhead UPGRADE Adapter - 52mm BARKER OUTDOORS BALLHEAD - SADDLE ARCA RAIL - COMPLETE KIT INCLUDES EVERYTHING NEEDED FOR UPGRADED BALLHEAD FEATURE. - Replaces the Deathgrip Saddle. - Easy installation. - 3/8" Male end to screw into Ballhead - NO BALLHEAD INCLUDED - PLEASE SEE OUR OTHER LISTING FOR "COMPLETE KIT" which includes our ballhead.