Product Description Reviews CIRCULAR SAW BLADE Quality Tungsten carbide tipped circular saw blade for timber cutting These blades feature a hardened and tempered body and quality tungsten carbide tips for durability and extended cutting life Features & Specs Diameter: 355mm (14″) Arbor hole 30mm – with 25.4mm bush Teeth: 80 teeth Tip material: Tungsten carbide tipped Max Speed: 4500 rpm Cuts: Wood Timber 1 Review 3 14″ circular saw Posted by bill on 18th Jan 2020 Arbor hole 30mm – with 25.4mm bush. in fact one of 2 bush is not 25.4mm, I have to trim it with a file before fitting it into my machine.