Convertibles are compatible with both electronic soft tip dart machines and bristle dartboards. Just change the point! The Precision Grip Convertibles allow shooters the best of both worlds while retaining the same feel and control. We offer you two darts in one. The Precision Grip Convertible 90% tungsten dart line is available in smooth, coarse and Edge Grip Knurl. Convertible darts are weighed as soft tip darts.