Select Class: -- select -- SM0-Showman - Saturday 11th May SM0A-Primary – grades 1 - 6 SM1-Primary 4-phase SM2-Primary 3-phase SM2a-Secondary – grades 7 - 12 SM3-Secondary 4-phase - 45cm SM4-Secondary 4-phase - 60cm SM5-Secondary 4-phase - 85cm SM6-Secondary 3-phase