The tamperproof Star and hexagonal bits have a hole drilled in the bit to take the pin of the security fixing. The Bit holder shaft and the insert bits are manufactured from chrome vanadium steel hardened, tempered with shot blasted finish.

1/4 inch square star and hex security bit sets contains:

1 x 1/4 inch Female Magnetic Bit Holder.
1 x 1/4 inch Male Magnetic Bit Holder.
3 x Star Bits: 6, 8 and 10mm
4 x Spanners Bits: 4, 6, 8 and 10mm
4 x Tri-wing Bits: 1, 2, 3 and 4
6 x Hexagonal Security Bits: 2, 2.5, 3, 4, 5 and 6mm
6 x Hexagonal Security Bits: 5/32, 9/64, 1/8, 7/64, 3/32, 5/64
9 x Tamperproof Star Bits: T8, T10, T15, T20, T25, T27, T30, T35, T40

Packed in a handy plastic storage case.

Part Number: ki13648