These easton lock on mountain bike grips feature a clever locking mechanism the aluminium clamps dont directly clamp onto carbon handlebars and the elastomeric polyurethane is used is place of the kraton for increased comfort and durability the aluminium clamps are concealed by the grip which gives these grips a sleek appearance and further boosts comfort easton lock on grips are available in 30 and 33mm diameters and in six colours