Mini Quick change tool post holder set +9pcs 3/8 boring bar+3/8 5Pcs. Fits 7x10, 7x12 and 7x14 mini lathes quick change tool post Made from 6061 T6 Aluminum 9pcs sets 3/8" boring bar 3/8" 5PC INDEXABLE CARBIDE INSERTS TURNING TOOL BIT SET-Chipbreaker C6 grade inserts Turning Holder: 1/4-3/8" Shank; Boring Holder: 3/8" Shank; Cut-off Blade Holder: 1/2.