ER20 Tap Collet .255x.191 6.5x4.9 1/4" Mechanical Seal
ER20 Tap Collet .275x.217 7.0X5.5 M10
ER20 Tap Collet .315x.244 8.0X6.2 M8 M10
ER20 Tap Collet .318x.238 8.1x6.0 5/16" Mechanical Seal
ER20 Tap Collet .318x.318x.238 8.1x6.0 5/16"
ER20 Tap Collet .323x.242 8.2x6.1 7/16"