The demolition magnesium unsealed pedals they are an alright pedal , they come loose just like every unsealed pedal but the time it takes for them to loosen back up from when you tightened them is rediculous it takes about 2 or 3 hours no joke true story , one broke on me pedalsliding ledges but its expected right well it shattered into like 6 pieces , they either grip too good or not enough , if your foot isnt exactly in the right spot on the pedal they dont grip at all , demolition also has a shitty waranty on them its only like 90 days for the pedals they said would last at least a year , shady huh ?