Spank Spike 30 Lock-On Grips With a simple one-sided lock system and integrated bar-ends, the Spike 30 Lock-On Grips are sleek, and offer great grip. The simple lined and dotted pattern accommodates to the shape of your hand, and at 30mm in diameter, they're not too bulky. The length is 145mm, so they're wide enough to fit your hand in different stances, and they weigh in at only 115g for the pair. Features Length 145g Diameter 30mm Weight 115g | Spank | Spike 30 Lock On Grips Black/grey