FH4 Fin This item was sourced on www.MFG.com as one of the items in an RFQ in USA for Polishing Part to have a polished finish on all faces. Edges to have minimal distortion (rounding). Part Part Number: H4-F1 Material: Aluminium Material Grade: 6061 alum Technical Specifications Category:Polishing Dimensions0.0 x 0.0 inch Annual Usage:2500.0 Are you looking for suppliers (machine shops, fabricators, casters, molders, 3D printing, CNC machining, etc.) to provide manufacturing services for machine tool industry, automotive industry? For more information visit MFG.com. MFG.com performs a 5-point inspection on all engineered parts and RFQs to ensure quality and enhance your online quoting experience Polishing: Polishing and buffing processes are surface treatments performed to smooth a variety of materials. Polishing may be done for functional purposes on parts like shafts, cylinders or lenses. Polishing is also done for aesthetic purposes, for example, to achieve hi-gloss, satin or brushed finishes on materials. Polishing and buffing require the use of a buffing pad and a compound, usually containing a very fine, silica-based abrasive. Polishing is done manually, with power tools, or with fixed machines.