280Grit AT040 - 4in Adjustable Engine Cylinder Hone Suitable for honing cylinders from 50-180mm diameter. Spring tension adjustment gives positive cutting action. Use together with air tools. AT040-SM – Replacement Stones (3 Piece) Supplied with 280grit stones

280Grit AT040 - 4in Adjustable Engine Cylinder Hone Suitable for honing cylinders from 50-180mm diameter. Spring tension adjustment gives positive cutting action. Use together with air tools. AT040-SM – Replacement Stones (3 Piece) Supplied with 280grit stones