SIR0265K08 3/8″ Mini Indexable Threading Tool Holder Kit (2305-0375) ~ Kit includes 1 tool holder, 1 wrench and 10 carbide inserts. ~ Right hand. ~ Superior for running at low speeds. ~ Threads all the way down in a blind hole. ~ 3 cutting edges on insert provides 3X the tool life. ~ D1 is 0.265″. ~ L is 5″. ~ L1 is 0.71″. ~ Minimum bore is .31″. ~ Takes insert 08IRA60. ~ Screw size is M2.5 X 6MM. ~ Aluminum fitted case. ~ T8 wrench. Kit includes 1 tool holder, 1 wrench and 10 carbide inserts. Right hand. Superior for running at low speeds. Threads all the way down in a blind hole. 3 cutting edges on insert provides 3X the tool life.