One clamp per package. • Holds objects 2.75” to 3.50” (70mm to 89mm) in diameter . • The mounting base is 4.5” x 1.25” (31.75mm x 114.3mm). • Attaches with one ¼” bolt (6mm). • One clamp supports a safe working load of 50lbs (23kilos). • The break strength is 150lbs (68 kilos). Made in the USA.