Specification: Item Type: Lawn Mower Blades Spark Plugs Material: Iron, Aluminum, Filter Cotton Weight: Approx. 548g / 19.3oz Application：Suitable for 450E for 500E for 550E for 550EX motor, Suitable for MSV for MSV 550 18in Cutting Machines Part Number: 5295946352 007 1000 780658 Package List: 1 x Air Filter 1 x Spark Plug 4 x Blade 4 x Bolt Feature: 1. Excellent Mowing Results: The blade spark plug kit helps us mow faster and produce excellent mowing results, practicality is strong 2. Easy to Use: The lawnmower kit is designed to be easy for beginners to learn and use. It is easy to operate and does not take up too much time 3. Material: Mower kit made of iron, aluminum, filter cotton material, durable and long lasting, not easy to wear, durable, long service life 4. Perfect Accessories: Lawn mower kit stable performance, can effectively extend the service life of the machine, can perfectly match your machine, is the perfect accessories for garden tools 5. Wide Application: Lawn mower kits are professionally manufactured, exquisite workmanship and high accuracy. Suitable for garden, lawn, yard, path