yet doesn't carry a massive weight penalty

The tips open from 21mm down to 2mm (centre to centre)

5mm or 0mm flipped

Weight:37g

The race grooves are also deeper on these bearings to provide increased lateral support to counteract the twisting and multi-directional forces associated with mountain bike pivots

Wolf Tooth 12mm Rear Thru Axle Button Slider - Gold Envelope Shipping yet doesn't carry a massiveKnowing the pain of damaging a prized frame, Wolf Tooth engineered end caps that would take the brunt of rock scrapes and crashes. And because to look good is to feel good they decided to offer Axle Caps in eight anodized colours. Caps thread into a dedicated recess in the Wolf Tooth Rear Axle head and are easily replaceable or swappable with an 8mm hex key. Compatibility: Wolf Tooth Rear Axles Specs: Weight: 4g Material: 6061 T6 aluminum Tool