Vision sizemore alloy mtb stemthis high quality stem is particularly optimised for triathlon by its two bolt clamp design it allows an uncomplicated installation of clip ons furthermore the durable sizemore is made of cnc machined 6061 t6 aluminium and equipped with black chrome m6 screws since its birth in kona in the 90s vision has been synonymous with a no expense spared assault on wind resistance recent years have seen the innovative application of carbon fibre and the creation of dream