ER20 Tap Collet .177x.134 4.5X3.4 M4 M6
ER20 Tap Collet .194x.152 4.9x3.9 #10 3/16
ER20 Tap Collet .197x.157 5.0X4.0 M4 M4.5 M5
ER20 Tap Collet .220x.165 5.6x4.2 #12
ER20 Tap Collet .236x.193 6.0X4.9 M5 M6 M8
ER20 Tap Collet .255x.191 6.5x4.9