They sell 43mm ones and 47mm ones... you're in between sizes b/c 16mm is an odd size for a spacer, 15mm is the common size (3,5,8,10,12,15,20...). I think blackforest makes a 16mm spacers and should also make bolts for them so you might want to give them a shot. Just remember if you're on stock wheels you'll need a ball seat bolt.