seat the beautifully machined lip just under the cap and BOOM

And with 8

How does it hold the bike:  It's primarily designed to grab the top tube of the bike

while only gaining a scant 50g

Like all Park Tools

Hope Pro 4 Rear 6 Bolt Disc Hub - 12x157mm Superboost - 32 Hole - Shimano Microspline - Purple PDP|PLP|Brake Rotor Type seat the beautifully machined lipThe Pro 4 is an incredibly versatile and easily serviceable hub that builds upon Hope's reputation for bulletproof quality and attention to detail. The hubs are machined from a single billet of 2014 T6 aluminium and run on stainless steel sealed cartridge bearings for smooth running and outstanding reliability. The 4 pawl ratchet system has 44 teeth with solid and reliable 8. 2 deg engagement with that unmistakable Hope sound. The Pro 4 spoke flange