Add to Cart Quick view DRILL STEP CONE BIT SET 3PCS TOTAL TACSD2031 Total MSRP: Now: $4,233 Was: TOTAL step drill bit set 3pcs (TACSD2031) SPECIFICATIONS 3 pcs step drill bit set 1pcs 4-12mm,1mm/step,Shank diameter:6mm 1pcs 4-20mm,2mm/step,