2 Effective Drill Head changeable drill Head changeable drill series ø6 mm - ø25.9 mm / L/D = 1.5, 3, 5, 8, 12 L/D = 12 : ø8 ~ ø22.9 J010 - J027 Two cutting edges functioned for productivity in large diameter drilling ø26 mm - ø41 mm / L/D = 3, 5 J028 - J032 Solid Drill High performance solid carbide drill J033 - J053 DSW ø3 mm - ø12 mm / L/D = 3, 5, 8 J034 - J040 DSX ø3 mm - ø10 mm / L/D = 3, 5, 8 J041 - J044 DSE ø3 mm - ø10 mm / L/D = 2, 3 J045 - J047 DSM / DSM-CP ø0.1 mm - ø3 mm / L/D = 5, 10, 15 J048 - J050 FDC ø5 mm - ø16 mm / L/D = 5, 8 J051 - J052 CDS ø0.4 mm - ø13 mm / L/D = 5 - 12 J053 Tungaloy J009