Got to be carefull here, there are several versions which do the same thing but vary in quality. HEL do a budget connector that connects anywhere on the brake line but not closer than 100mm to the caliper/master cylinder. I have a pair of these which were a bike show special that cost £50 per brake line. Then way up the budget scale you have the dry connectors that fit directly to the caliper/master cylinder and are like £275 each and with 2 in each brake line, thats £1100 I haven’t had to use my dry connectors in anger yet but they do look bling. A word of advice, decide where you want the connector to be, my first attempt had it 100mm up from the caliper where it will rub and bash the fork outer unless you protect everything. On the Mk2 I have them 200mm down from the master cylinder and they are nicely out of the way of everything. Andy