ABEC 9 Speedmax
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Roll-Line SPEED MAX Professional Bearings 

Type:   Custom Roll-Line 
Axle Center Bore:   7mm = KSTCUMB
   Be sure you identify which size Axles you have and which
      size (7mm or 8mm) Bearings are needed. NOTE: Speed MAX is only available in 7mm.
Outside Diameter:    22mm (the same for all Roller Skate Bearings)
Number of Balls:   Ultra Precision 8 Balls
Special Features:   Carbon Impregnated Ball Crown Cage Ring 
with 1 Metal Shield 
ABEC Rating:   ABEC 9
One (1) Set=   16 Bearings

The Roll-Line SPEED MAX Professional Bearings are specifically designed and manufacturered for very High Level Competitive Roller Skating of all types. 

The Roll-Line SPEED MAX Professional Bearings are a direct copy of the original Snyder Super Fafnir Bearings which sold for $160.00 per set in 1982 when they were released.  The Snyder Super Fafnir Bearings were the last project that I worked with Grandpa (Charles Snyder) and have proved over time to be the best bearing designed specifically for Roller Skating.  The Roll-Line SPEED MAX Professional Bearings carry all of the hallmarks and performance of the original Bearings, with a couple of upgrades that were not available in 1982.

I consider these Bearings to currently be the BEST Skating Bearings available at any cost.  David Ripp 

The SPEED MAX Professional Bearings are Free Rolling with minimal Radial Play which promotes and very evenly distributes the load across the 8 balls for optimal Roll and a good amount of Axial Play or Thrust, which is the side movement of the inner race in relation to the outer race. This movement is very important because when Skaters push, we always put side load on the skate to get power in the push or stroke. If the Bearing does not allow for this, it will bind and LOOSE operating speed or ROLL. These provisions in the Race Curvature and Contact Angle allow the Roll-Line SPEED MAX Professional Bearings to ROLL very freely.  

The Roll-Line SPEED MAX Professional Bearings  have a single metal Shield to help keep the dust and dirt out.  The high performance Ball Crown Cage is Carbon impregnated to provide a little extra dry lubrication to ensure these Bearings will perform far beyond most other Bearings.  Roll-Line SPEED MAX Professional Bearings are available for Skates with 7mm.  These ultra high performance Roll-Line SPEED MAX Professional Bearings will perform at the level of some of the most expensive ceramic bearings, but have the resiliancy and strength of Bearings with 8 Steel Balls to provide better performance for much less cost.  The Roll-Line SPEED MAX Professional Bearings are skated on by most of the World level Skaters and Champions in Artistic and Quad Ball Hockey. 

No matter what type or your level of Skating, GREAT Bearings can only help!