Are the torx bits security torx (do they have the small hole in the center)?

These are regular torx bits. No security bits.

Do they come in a case ?

No. No case. It came in a plastic ziplock type bad.

How long are the bits (from one end to the other) and are they magnetic?

The bits in my set ranged from 1.178-1.183" long. They are easily attracted to magnets but are not supplied magnetized to pick up a dropped screw, etc. I got these to use in my Leatherman ratchet driver and they fit and work perfectly.

what bit holder or bit driver works with these? theyre too long for all mine

I use two types of drivers. The Wiha 3/4 387 and the Hazet 810 BH. They both hold the bits securely. I also use them in my Leatherman and Victorinox bit holders.

Manufacturer	Wiha
Part number	77781
Item Weight	13.6 g
Product Dimensions	2.54 x 2.54 x 2.54 cm; 13.61 g
Item model number	77781
Size	One Size
Color	Multi
Finish	Steel
Material	Blend
Pattern	Solid
Shape	Rectangular
Power source type	hand_powered
Item Package Quantity	1
Number Of Pieces	13
Head Style	Square
Compatible Fastener Range	Phillips, Pozidriv, Square, and Torx
Included components	Double End Insert Bit Reload Set, 13 Piece
Batteries Included?	No
Batteries Required?	No

WihaDouble End Insert Bit Reload Set, 13 Piece

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