Lawn Mower Blade Balancer Magnetic Wall Mount 42-047 ; 339075B This blade balancer has 6 magnets ensures a perfect grip which allows for better stability and durability. Holds any size blade center hole up to 1-1/2"". The balancer has a ball bearing spindle. Mounts on the wall. Specification: Pattern ?: Solid ?Material: Metal Quality construction Manufactured to meet or exceed OEM specifications This blade balancer is identical to model 42-047 Include: 1 PC Professional Lawnmower Blade Balancer This blade balancer has 6 magnets ensures a perfect grip which allows for better stability. Holds any size blade center hole up to 1-1/2"". The balancer has a ball bearing spindle. Mounts on the wall. Made of high quality metal material,the thin metal rod to check the blades to see if they are bent,providing a smoother cut. (When the blade is balanced, it will be horizontal.) Install note: Please make sure there is enough space on either side when you mount your balancer,so that blades can rotate 360 degrees without obstruction and do not to hit anything.