Image 1 of 1 ROOT INDUSTRIES Fork Axle M8 45mm $4.00 Root Industries 45mm High-Tensile Steel Fork Axle for Root Industries Forks.Also work with any fork requiring a 45mm axle. Quantity: Get It! Added! Root Industries 45mm High-Tensile Steel Fork Axle for Root Industries Forks.Also work with any fork requiring a 45mm axle.