Krator HBD030-10B Engraved Frame Slider,1 Pack High quality Spike Billet Aluminum Swing arm Spools/Sliders(Left & Right Sides) Easy installation bolt straight into your swing arm (mounting Bolts are included) These swing arm spools are designed to protect your swing arm & axle nut in the event of a crash Brand: Krater | they can also be used with a Race stand to Lift the rear wheel off of the ground for changing your tire or oiling your chain Protect your bike spiked design 100% brand new