AT REDUCED SHANK DRILLS
AT reduced shank drills—often called Silver & Deming drill bits—are designed to drill larger hole diameters while using a reduced shank size that fits common drill chucks (application dependent). They’re frequently used in fabrication and maintenance work when you need a larger drill diameter but want to run the tool in a standard 1/2" chuck without switching to specialty tooling.
Alfa Tools SD250401 17/32 HSS ECO PRO S&D DRILL 1/2" SHANK
SKU: AT-SD250401
MPN: SD250401
Alfa Tools SD250401C 17/32 HSS ECO PRO S&D DRILL 1/2" SHANK CARDED
SKU: AT-SD250401C
MPN: SD250401C
Alfa Tools SD250402 35/64 HSS ECO PRO S&D DRILL 1/2" SHANK
SKU: AT-SD250402
MPN: SD250402
Alfa Tools SD250402C 35/64 HSS ECO PRO S&D DRILL 1/2" SHANK CARDED
SKU: AT-SD250402C
MPN: SD250402C
Alfa Tools SD250403 9/16 HSS ECO PRO S&D DRILL 1/2" SHANK
SKU: AT-SD250403
MPN: SD250403
Alfa Tools SD250403C 9/16 HSS ECO PRO S&D DRILL 1/2" SHANK CARDED
SKU: AT-SD250403C
MPN: SD250403C
Alfa Tools SD250404 37/64 HSS ECO PRO S&D DRILL 1/2" SHANK
SKU: AT-SD250404
MPN: SD250404
Alfa Tools SD250404C 37/64 HSS ECO PRO S&D DRILL 1/2" SHANK CARDED
SKU: AT-SD250404C
MPN: SD250404C
Alfa Tools SD250405 19/32 HSS ECO PRO S&D DRILL 1/2" SHANK
SKU: AT-SD250405
MPN: SD250405
Alfa Tools SD250405C 19/32 HSS ECO PRO S&D DRILL 1/2" SHANK CARDED
SKU: AT-SD250405C
MPN: SD250405C
Alfa Tools SD250406 39/64 HSS ECO PRO S&D DRILL 1/2" SHANK
SKU: AT-SD250406
MPN: SD250406
Alfa Tools SD250406C 39/64 HSS ECO PRO S&D DRILL 1/2" SHANK CARDED
SKU: AT-SD250406C
MPN: SD250406C
Alfa Tools SD250407 5/8 HSS ECO PRO S&D DRILL 1/2" SHANK
SKU: AT-SD250407
MPN: SD250407
Alfa Tools SD250407C 5/8 HSS ECO PRO S&D DRILL 1/2" SHANK CARDED
SKU: AT-SD250407C
MPN: SD250407C
Alfa Tools SD250408 41/64 HSS ECO PRO S&D DRILL 1/2" SHANK
SKU: AT-SD250408
MPN: SD250408
Alfa Tools SD250408C 41/64 HSS ECO PRO S&D DRILL 1/2" SHANK CARDED
SKU: AT-SD250408C
MPN: SD250408C
Alfa Tools SD250409 21/32 HSS ECO PRO S&D DRILL 1/2" SHANK
SKU: AT-SD250409
MPN: SD250409
Alfa Tools SD250409C 21/32 HSS ECO PRO S&D DRILL 1/2" SHANK CARDED
SKU: AT-SD250409C
MPN: SD250409C
Alfa Tools SD250410 43/64 HSS ECO PRO S&D DRILL 1/2" SHANK
SKU: AT-SD250410
MPN: SD250410
Alfa Tools SD250410C 43/64 HSS ECO PRO S&D DRILL 1/2" SHANK CARDED
SKU: AT-SD250410C
MPN: SD250410C
Alfa Tools SD250411 11/16 HSS ECO PRO S&D DRILL 1/2" SHANK
SKU: AT-SD250411
MPN: SD250411
Alfa Tools SD250411C 11/16 HSS ECO PRO S&D DRILL 1/2" SHANK CARDED
SKU: AT-SD250411C
MPN: SD250411C
Alfa Tools SD250412 45/64 HSS ECO PRO S&D DRILL 1/2" SHANK
SKU: AT-SD250412
MPN: SD250412
Alfa Tools SD250412C 45/64 HSS ECO PRO S&D DRILL 1/2" SHANK CARDED
SKU: AT-SD250412C
MPN: SD250412C