Simple and convenient: The hand drill balancer is quick to install and operate, quickly repair the garden and improve work efficiency. Easy installation: The drill bit striker is easy to install, it only takes a few seconds, you just need to install it on the electric drill and it's ready to go. MATERIAL: The lawn mower pointer is made of double-layered aluminum oxide which is tough wearing and durable enough to clean the edges of your lawn mower. Powerful: The drill bit pointer allows for dull blades that need to be sharpened to be required, making it a great helper for lawn mower and lawn tractor blades. Good for: The electric drills pointer for power drills, simply attach it to the drill to sharpen lawn mower blades well. Blue color Size: 5.6*5.6*6.4cm Quantity delivered: 4 pieces Product dimensions are all measured by hand, there are errors and the actual product shall prevail. Product color is affected by shooting light view and there is a slight color difference, which depends on the actual product received.