Product description RING SPANNER SET (Set of 8 Pcs in Rack Packing) Sizes: 6x7, 8x9, 10x11, 12x13, 14x15, 16x17, 18x19 & 20x22mm Elliptical Pattern Rough Matt Finish Full Body Hardened & Tempered Dull Matt Chrome Plated Perfect & Comfortable Gripping of rounded off nuts