The Mototech Bulwark Knee Armour Screws are replaceable and used in Bulwark Bionic Knee Armour to hold it firmly while riding. They are available as a Set of 4. The Bulwark Knee Armour Screws offer reliable stability and long-lasting durability, ensuring a secure fit on every ride. With a set of 4 replacement screws, you'll have peace of mind that your gear is always ready for the road.