Sizes: #1, #2, #3, #4, & #5, 1/8"-3/4" width

High Carbon Alloy Tempered Steel, Multi-Fluted

Hardened for long life

Extract a wide variety of screws, easy to use

Reverse Thread, locks on and backs out broken studs

#1.   1/8" - 1/4"

#2.   1/4" - 5/16"

#3.   5/16" - 7/16"

#4.   7/16" - 9/16"

#5.   9/16" - 3/4"