Quick Change Tool Post Set 6 Pcs Lathe Tool Holders for 6″-12″ Mini Lathe Swing 6-Piece Quick Change Tool Post Set User-Friendly Operation Rock-Solid Lock Versatile Use Product Dimensions Reinforced Protective Packaging Item Model Number: 250-100(6), Quantity: 6, Material: 45# Steel, Item Dimensions: 2.54 x 2.54 x 3″/64.5 x 64.5 x 76.2 mm, Compatible Size: 6 to 12″/152.4 to 305 mm, Item Weight: 10.8 lbs/4.9 kg.