This blade insulator is an authentic Black and Decker replacement part. It is supplied from original equipment manufacturer for use with push/walk-behind lawn mowers. It acts as a adapter/spacer for the mower blade. This item is made out of plastic material and it is sold individually. To replace it you would need a wrench to remove the blade nut.
This is a Genuine Manufacturer Approved replacement Spacer for a Blade used on certain Black and Decker Lawn Mowers. It is made out of Metal and is Sold Individually. This Spacer sits on top of the Fan and it allows it to spin freely and with less friction.
It is a genuine replacement screw that is sourced directly from original equipment manufacturer. This is a standard hardware that has multiple uses depending your tool. For correct location and use of this screw, please check appropriate diagrams. This torx screw is sold individually.