Every single piece of equipment on your bow has a purpose and is meant to maximize the performance of your bow. Our Archery Accessory Crossbow Quiver Holster can hold up to 6 of our 20 inch or 16 inch aluminum bolts which is for the MK-250, MK-200, MK-120 Series of Crossbow. It comes with all the setup materials to fix on your MK-250, MK-200, MK-120 Series Crossbows. It is made from ABS material, so you dont have to worry about drying in the weather. You can also use the Broadheads which fits your arrows on this Quiver.