The Bauer Tuuk LightSpeed 2 Edge Runners are the standard replacement runners available for the LightSpeed Edge holder. The Tuuk LightSpeed Edge runners are sold in pairs and featured on most skates.
The Tuuk LightSpeed 2 Edge runners are also referred to as Tuuk LS2 Edge runners. 
Model Number: 1041842
Bauer General Sizing Guidelines
Size / Length / Compatible Skate Sizes
Sr. 6 / 254 / 6.0D-6.5D  (5.5EE-6.0EE)
Sr. 7 / 263 / 7.0D-7.5D  (6.5EE-7.0EE)
Sr. 8 / 272 / 8.0D-8.5D  (7.5EE-8.0EE)
Sr. 9 / 280 / 9.0D-9.5D  (8.5EE-9.0EE)
Sr. 10 / 288 / 10.0D-10.5D  (9.5EE-10.0EE)
Sr. 11 / 296 / 11.0D-11.5D  (10.5EE-11.0EE)
Sr. 12 / 306 / 12.0D  (11.5EE-12.0EE)
Replacement Runners for:
2013 Vapor Skates (APX2, X100, X90, X80, X70 and X60)
2014 Supreme Skates (MX3, 190, 180, 170 and 160)
2014 Nexus Skates (8000, 7000, 6000 and 5000)
2015 Vapor Skates (1X, X900, X800, X700, X600 and X500)