Huot 12050 Chucking Reamer Index for Fractional Sizes 1/16" to 1/2" in 1/64" Increments Index holds 29 reamers in fractional sizes 1/16" to 1/2" in 1/64" increments Labeled storage holes for identification and organization Made of steel with an epoxy finish and has a snap-lock cover for durability and protection Made in USA