No 1 HOOP 100MM (4 inch) No 2 HOOP 130MM (5 inch) No 3 HOOP 160MM (6 inch) No 4 HOOP 190MM (7 inch) No 5 HOOP 220MM (8 inch) No 6 HOOP 250MM (9.84 inch) No 8 HOOP 310MM (12.2 inch)