I-taper bits 38mm 11°
Ama-taper bits, ikakhulukazi izinkinobho ze-Tapered ama-drill bits athandwa kakhulu anokukhethwa okubanzi kobubanzi bekhanda ukusuka ku-28mm kuya ku-41mm. Njengoba izinkinobho ze-carbide zicindezelwe eziketini ezincane, izinkinobho ezicijile zisebenza kahle futhi zinhle kakhulu ekuphileni isikhathi eside.