Auger and Kelly Bits

No. 6
3-Wing Step Type Auger Bit
2-3/4″ Thru 3-3/4″
2″ HDFA box or ARCO Box

No. 8
3-Wing Step Type Kelly Bit
4-3/4″ Thru 10″
MHJR, FA, MR or
IF Box Connections

No. 9
3-Wing Step Type Kelly Bit
3-7/8″
ARCO Box, MHJR Box or
Mobile Lock Box