QS-1/4-5/16-I-U-M QS-1/4-6 QS-1/4-6-100 QS-1/4-6-I QS-1/4-6-I-100 QS-1/4-8 QS-1/4-8-50 QS-1/4-8-I QS-1/4-8-I-50 QS-1/8-10