The M696 air hammer retainer spring is a replacement part that fits Makita M550DB and M668 air hammers. This spring secures the tool's working piston in place, allowing the hammer to deliver powerful, consistent impacts for demolition, chiseling, and breaking applications. Made of heat-treated steel for durability, the M696 spring ensures long-lasting and reliable performance even under the stresses of demanding jobsites. Its compact design fits neatly inside the hammer housing without adding bulk. Contractors and DIYers alike will appreciate how easily this affordable spare part keeps their air tools running smoothly.