Replaced all four burners and drip pans. Upgraded burners to the integrated ring on chassis type rather than the three point drop-in with separate ring. Drip pans were rusty-crusty so they went. These are better parts than were in the stove. 1/4" nut driver for all screws. Slip joint pliers to hold the connector ends while tightening so they don't bend. Small flat head screwdriver to pry off the spring clips on the ceramic insulation blocks and to pry loose the clips (that the burner mounting screw taps into) in the burner holes to replace them. Easy peasy but tedious work. Two 6" and Two 8". Now as good as a new stovetop for $300.00.