An online store for T-slot cutters. Products such as key seat cutters and key groove cutters are also listed in this category. Misumi brand T-slot cutters are dimension specification products enabling selection of a combination of blade diameter and blade width. [What is a T-slot cutter?] It is a cutting tool used when processing T-grooves, etc. There is a cutting edge on the outside and both sides, of straight blade type and staggered blade type. Shanks include slim shank type and neck relief type.