Heavy Duty High Speed Drills – Jobbers Length Fractional Sizes

All high speed drills made in America to meet aircraft standard specifications. Premium quality shock resistant high impact steel.

JOBBER SIZE STUB SIZE COBALT SIZE
JF 1/16″ JF 19/64″ SF 1/16″ SF 19/64″ JC 1/16″ JC 19/64″
JF 5/64″ JF 5/16″ SF 5/64″ SF 5/16″ JC 5/64″ JC 5/16″
JF 3/32″ JF 21/64″ SF 3/32″ SF 21/64″ JC 3/32″ JC 21/64″
JF 7/64″ JF 11/32″ SF 7/64″ SF 11/32″ JC 7/64″ JC 11/32″
JF 1/8″ JF 23/64″ SF 1/8″ SF 23/64″ JC 1/8″ JC 23/64″
JF 9/64″ JF 3/8″ SF 9/64″ SF 3/8″ JC 9/64″ JC 3/8″
JF 5/32″ JF 25/64″ SF 5/32″ SF 25/64″ JC 5/32″ JC 25/64″
JF 11/64″ JF 13/32″ SF 11/64″ SF 13/32″ JC 11/64″ JC 13/32″
JF 3/16″ JF 27/64″ SF 3/16″ SF 27/64″ JC 3/16″ JC 27/64″
JF 13/64″ JF 7/16″ SF 13/64″ SF 7/16″ JC 13/64″ JC 7/16″
JF 7/32″ JF 29/64″ SF 7/32″ SF 29/64″ JC 7/32″ JC 29/64″
JF 15/64″ JF 15/32″ SF 15/64″ SF 15/32″ JC 15/64″ JC 15/32″
JF 1/4″ JF 31/64″ SF 1/4″ SF 31/64″ JC 1/4″ JC 31/64″
JF 17/64″ JF 1/2″ SF 17/64″ SF 1/2″ JC 17/64″ JC 1/2″
JF 9/32″ SF 9/32″ JC 9/32″