Sharp Microwave Repair Need Screwdriver Bit For Sharp Carousel Microwave, Rear Screws?

Need screwdriver bit for Sharp Carousel Microwave, rear screws? - sharp microwave repair

How can I remove this piece on the screws with the stars, since the entry mentioned in the head and a mini-tower base in the middle? Furthermore, the magnetron is cheap?

Not for me no worries was electrocuted, hit 60 + with hundreds of repairs (at least).