What is this screw ?

[Dooley]

This something you'd be able to get a bit for or would it be some proprietary thing ?

[chimpboy]

You can get bits for them; I got a set of gazillions of bits from Jaycar that includes this type.

I've seen them elsewhere too.

[Spimon_NH]

You can get a set of 'security' bits to undo that type of thing from Bunnings. It comes in a kit made by Kincrome (KC part number 13648).

It's called a tri-wing bit and that kit includes 4 different sizes (along with 28 other bits). The kit is a fraction under $30.

[r0ck_m0nkey]

Dick Smiths have a 100 odd piece security bit kit for about $30, which has many different types of security bits in it.

Although i have one that would fit those screws, i'd still be inclined to jam a flat blade screw driver or an allen key in it for first attempt

[Madmac]

yeah as others have already said, jaycar or dick smiths sell them, i have a bit in my set that fits those.

[nicbeer]

if u just want to undo it or borrow the bits i may have one to fit that.

same dick smith kit.

Have to find it thou hehe

[Spimon_NH]

or purchase one and hang onto the recepit in case 'it doesn't fit '