Feature●?+15° to -15° Tilt. ?3/8"-16 Top Stud. ?3/8"-16 Bottom Socket w 1/4"-20 Bushing.●?Includes 3 Anti-Rotation Set-Screws.●?Easy Grip Butterfly Type Lock Collar●?Max Load 40kg (88lb).●?Ball Diameter 90mm.●?Base Diameter 75mm.●?Height 65mm. ?Weight 454g 16oz)Description ?+15° to -15° Tilt. ?3/8"-16 Top Stud. ?3/8"-16 Bottom Socket w 1/4"-20 Bushing