You have to buy a torx star t10 t15 and t20 security screwdriver. They have diffirent screw size.
screws and screwdriver like this:(a hole in the screw driver)
http://www.gbsportandleisure.co.uk/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/S/P/SP-04-024.jpg
like this product:
http://www.aliexpress.com/item/9PCS-Security-Anti-Tamper-Torx-Star-Key-Bit-Wrench-L-Shape-T10-T20-T35-Chrome-Free/1954144702.html
aykut burak, August 2014
this is a tork star tamper proof screw they don't want joe public to repair them looks like this * with a little tit sticking up.
wirecutterman, January 2008
I'm not sure its a star head screw driver as it has a knob in the centre of the screw
I used an electrical flat head screw driver and put it across the star points using the centre knob to brace it, it turned quite easily
