The Set includes : 1pc of Boring Head, 1pc of Boring Head Shank and 1set of 9pcs of Carbide Tipped Boring Bars.
--The Dia. Of the Boring Head: 2, 3, 4 (inch)
-- The types of the shank: R8 shank, MT shank and ISO shank.
--Boring Bar Set: 9pcs/set 1/2, 3/4 and 1 inch.
oring head, carbide boring bar sets, and arbor head adaptor are sold separately.