It's probably the best top cap you will ever have. One piece, bolt+topcap with Allen (hex) 5 mm socket. Will fit to every standard starnut.
Not suitable for "expanding" star nuts with the steel coil spring (used in carbon steerer).
- Real weight: 5 g.
- Key required: Allen 5 mm.
- Material: CNC machined 7075.
- Dimensions: for measuring purpose treat it like 25 mm hex bolt.
- Designed in UK, made in Poland.