These kits are complete with all components required to replace factory OEM worn out or damaged boots. Made of Neoprene rubber and including Molybdenum grease plus all the hardware (including stainless steel bands) that is required to complete a replacement. Made of a higher quality than the original OEM factory boots, these parts are a much less expensive repair than the replacement of complete CV Joints when dirt and moisture enter the joint if a boot is torn or worn out.