PLEASE VOTE ON THIS GUIDE AT THE BOTTOM!!!
I purchased a set of these for my K4 gixxer 750 as I was suffering with aching wrists after long rides, and I needed grip on the tank to make cornering easier.
Fitted them no problems at all, just clean the tank with alcohol wipe then stick them on. Best when warmed up a bit, and make sure no bubbles underneath!
Highly recommended product!