All Shell Mill Holders are coolant thru capable unless stated otherwise. The arbor screws that are included are not coolant thru. Most shell mill manufacturers that supply a coolant thru shell mill will provide a screw that works for that cutter. More information on this subject is in our FAQ section under shell mill questions.

Tool holders with an M in the part number designate a smaller nose diameter than our standard shell mill. Nose diameters are listed on the product details page.