Specification: 1. Item 5006BUG-38-SB 2. Diameter 50mm(2") 3. Cup 38mm 4. Grip Pin Stem 7/16"(11mm)width X 7/18"(22mm)length 5. Height 61mm 6. Width 53mm 7. Static Capacity 50KGS/PCS 8. Stem Grip Ring / Top Plate / Screw 9. Color Black / Grey / Red / Dark Grey / Green / Yellow / Blue / White