Open edned grips, are designed so that you can use the alloy bar ends in to prevent damage to the grip and bars, and using these you have no need to cut holes in the end of normal grips.
Domino Bi-Polymer grips are soft on the outside but feature a tough inner core that prevents the grips twisting on the handlebar or the throttle sleeve. 

Features:
* dual compound design unites strength and comfort
* moulded handlebar end to prevent damage on the grip during a crash