1. Ho khaola thepa ka har'a curl e tsoelang pele
2. Ha ho blockage ea chip, lesoba la khoele
3. Matla a ho senya a phahameng a flexural
4. Sharp chip tshebetso, High lebelo machining
Sprial pointed tap, eo hape e tsejoang e le tip tap, e loketse ho kena ka masoba le likhoele tse tebileng.Ba na le matla a phahameng, bophelo bo bolelele ba ts'ebeletso, lebelo la ho itšeha ka potlako, boholo bo tsitsitseng le tlhahlobo ea leino la meno, Ke mofuta o mong oa pompo ea lekolilo e otlolohileng E loketse ho sebetsa ka machining a lesoba.