The control knob is made out of plastic. It is available as an individual replacement part. This item is an OEM from Aftermarket for use in outdoor grills. No tools should be needed during the installation process. It will require replacing if it breaks.
This part number matches the current model number 2000
Part #7103288YP
This genuine replacement part is supplied directly from original equipment manufacturer. This blade is designed for use with lawn mowers. It is a 3 in 1 blade which can be used to mow, mulch or discharge grass. This blade is made out of metal and it is sold individually. To replace it you would need a wrench to remove the blade bolt.