Impact Umbrella Bracket with Adjustable Shoe (2 Pack) Locking Universal Shoe Mount Umbrella Receptacle 2 Adapter Studs Tilt and Swivel Action Whats In The Box: Male Stud with 1/4"-20 and 3/8" Screw Thread, Female Stud with 1/4"-20 and 3/8" Female Thread, Locking Shoe Mount, 1 Year Manufacturer's Warranty