... series 2) RB201-218 series 3) SB201-212 series 4) SA201-211 series 5) UE201-211 series 6) HC204-212 series 7) UK205-217 series ... 8) UCP201-218 series ... SER201-212 series22) AEL series23) CSA series(2)Material: Chrome steel,Carbon Steel, ... , SB, HC, UC, UCP, UCT, UCF, UCFL, UCFC, UCPH,SNL series