Select Class: -- select -- SJ15A-Class 15 Open 30-50cm AM7 SJ15B-Class 15 Open 30-50cm 2Phase SJ16A-Class 16 Open 60cm AM7 SJ16B-Class 16 Open 60cm 2Phase SJ17A-Class 17 Open 70cm AM7 SJ17B-Class 17 Open 70cm 2Phase SJ18A-Class 18 Open 80cm AM7 SJ18B-Class 18 Open 80cm 2Phase SJ19A-Class 19 Open 90cm AM7 SJ19B-Class 19 Open 90cm 2Phase