4052 ,Ergo with ISO-Wings (pr) Ergonomically designed for maximum driver comfort, these mounts have an unbelievable range of adjustment for the tall, short or in-between rider. The articulated mounting bracket is made of highly polished stainless steel for extreme strength, great looks & simple installation. The 6" long chrome swing arm has an ingenious locking mechanism & is canted at a 6º angle which angles the pegs just the right amount for ideal comfort.