1. Female thread 113mm PDC bit ine 50mm shinda inoshandiswa pakuchera nekuchera mvura;2. Isu tinopawo 75mm, 94mm, 133mm, 153mm, 175mm, 215mm uye saizi dzakagadzirirwa; 3. Isu tinobvuma odha yemuenzaniso uye tinopa zvinhu zvemhando yepamusoro nemutengo unokwikwidza.