SIR0205H06 1/2″ Mini Indexable Threading Tool Holder Kit (2305-0500) ~ 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 0.205″. ~ L is 4″. ~ L1 is 0.500″. ~ Minimum bore is .240″. ~ Takes insert 06IRA60. ~ Screw size is M2 X 5MM. ~ Aluminum fitted case. ~ T6 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.