The mini roller skate bearing saves 12 grams per bearing and a whopping 192 grams (6.8oz) on a set of skates. That is a pretty huge weight saving. The mini bearings also spool up faster than 608 bearings getting you up to speed sooner for greater acceleration
The Bont FX1 wheel is excellent for roller derby or indoor rink skating, as it utilizes the smaller 688 or 167 bearings instead of the standard 608 skate bearing.
The 688 mini roller skate bearing has an exceptionally fine polished bearing track surface and incredibly precise balls. The lightweight plastic cages allow for lower rolling resistance
The Bont FX1 roller skate wheel is an ultra-lightweight, ultra-high-performance roller skate wheel. With super high rebound urethane combined with a unique mini bearing hub for fast acceleration and quick laterals
Standard 60mm diameter by 38mm wide with 92A hardness. Comes in a set of 8 with 688 bearings