Published by admin at 24th April 2015 use 502/401 glue to install arrow. video instruction where to buy 502/401 glue (around £3 each ) 502: https://www.amazon.co.uk/s?k=502+glue&ref=nb_sb_noss 401: https://www.amazon.co.uk/s?k=401+glue&ref=nb_sb_noss