Whites Tube 325/350/410-19 100/90-19 TR4 Yamaha The lock (not provided) is

The lock (not provided) is threaded down a waterproof tube that runs through the visor aperture and out of the bottom of the helmet so that you can lock it to the bike

This sounds like a great idea at first but there are some serious issues

Fixation holes center to center: 69 mm

All Balls has a lot of technology and engineering packed into their Crankshaft Bearing and Seal Kits

Whites Tube 325/350/410-19 100/90-19 TR4 Yamaha The lock (not provided) isAll Whites inner tubes are developed to the highest technical specifications and quality standards. Constructed from high quality butyl we have the perfect range for your ATV MXer or farm ride. Its butyl construction has significantly improved air retention properties when compared with natural rubber ensuring your tubes stay inflated for longer. Features: Constructed from high quality butyl rubber. Better air retention than natural rubber.