1.Package IncludedA total of 6 pieces of universal blade nut fixing kit box, including 1 protection plate, 1 pressure plate protection washer, 1 threaded nut, 1 thrust washer, 1 hexagonal wrench, 1 socket wrench. 2.Product SizeThe metal gearbox blade contains a backing plate (73.6mm), a backing plate protection washer (45mm), a ring nut (10mm), a backing washer (45mm), and an L-type key (110mm). 3.Extended Service LifeThe lawn mower head nut kit replacement is used to replace old or damaged parts, which can make your machine look brand new. Strong and durable, the steel wire is not easy to loosen. It has excellent wear resistance and strong folding effect. 4.MaterialThe universal lawn mower head metal accessories are made of metal, which has a long service life and high reliability. Strong and durable. A perfect replacement for most lawn mower working heads. 5.ApplicationThe lawn mower head nut kit parts are suitable for most six-tooth mowers.