Magnetospeed Barrel Spacer Kit For Extreme Tapered Barrels. Kit comes with a .5" spacer and a 1" spacer that can also be combined to form a 1.5" stack. Specifications for Magnetospeed Barrel Spacer Kit For Extreme Tapered Barrels: Manufacturer: MagnetoSpeed Fabric/Material: Polymer Package Contents: Magnetospeed Barrel Spacer Kit For Extreme Tapered Barrels The Magnetospeed Barrel Spacer Kit For Extreme Tapered Barrels is a quality addition to the MagnetoSpeed lineup. For more great deals on Chronographs & Shot Timers by MagnetoSpeed please browse our MagnetoSpeed Shooting Accessories page. Magnetospeed Barrel Spacer Kit For Extreme Tapered Barrels