Description:

Standard core bits have the following threaded hub sizes:
1-1/2" and under (bit diameter)= 5/8"-11 thread
(5/8" diameter, 11 threads per inch)
1-5/8" and up (bit diameter) = 1-250"-7 thread
(1-1/4" diameter, 7 threads per inch)

Features:

    •   Top Thread 5/8 " Straight
Shank Male
    •   Bottom Thread Male 5/8 " - 11