Get A New Edge! Spike will have you licking your chops on how satisfying this new pick is. It's sharp edges will all you to get that kill attack with all of you speed riffs. Made of Ultem for ultimate strength. Available in 3 gauges: .56mm, .72mm and .80mm.. These satisfying Spike picks will have you licking your chops. Their sharp edges will allow you to get that killer attack with all of your speed riffs. Made of Ultem for ultimate strength. Sharp triangle shape with the classic cartoon bull dog image.