Bauer HI-LO Kryptonium Chassis Bauer HI-LO Kryptonium Chassis Features The Hi-Lo Kryptonium Roller Hockey Chassis is the first chassis of choice for pro roller hockey players and can be found on the brand new Mission Inhaler FZ-0 skates. Its design was made to drastically reduce weight without sacrificing an ounce of durability. The very popular Hi-Lo setup arranges the wheels with (2) 80mm's in the back and (2) 76mm's in the front to increase maneuverability, power, and balance. The Kryptonium chassis kit comes with 2 chassis (8) 6mm axles, 8 long sleeved 608 bearing spacers, and 1 axle tool. Model Number: 1054900 Includes: 2 - Kryptonium Hi-Lo Chassis 1-piece construction Extra lightweight aluminum 8 - 6mm Round Flush 2-Piece Silver Axles 8 - Long Sleeved 608 bearing Spacers 1 - Axle Tool Weight: 170 grams (Based on a SR MD) Hi-Lo Sizing Guideline 2012-2019 Skates Frame Size / Bauer or Mission Skate SizeMD / 6.0- 9.5LG / 10.0 -12.0 2010-2011 Skates Frame Size / Mission Skate SizeSM / 6.0-7.5MD / 8.0-9.5LG / 10.0-12 2009 and Older skates Frame Size / Mission Skate SizeSM / 6.0-8.0MD / 8.5-10.5LG / 11.0-13.0 Includes : 1-Axle Tool 2-Bauer Kryptonium Hi-Lo Chassis 8-6mm Round Flush Two-Piece Silver Axles 8-Long Sleeved 608 Bearing SpacersSizing:Medium: Skate Size 6.0 - 9.5 Large: Skate Size 10.0 - 12.0 HILO