R650 Series 2-blade ball knife 2-blade extended ball knife 2-blade small diameter ball knife 2-blade small diameter deep groove ball knife 2-blade small diameter deep groove flat knife 2-blade small diameter flat knife 2-blade micro-diameter deep groove flat knife 2-edge micro-diameter deep groove ball knife 4-blade extended flat knife 4-blade extended round nose knife 4-blade flat knife 4-blade round nose knife 4-blade small diameter deep groove round nose knife