Kit includes: 1 feed module 1 separation roller 18 pre-separation pads and 50 replacement tires&lt;br /&gt;&lt;br /&gt;&lt;b&gt;Recommended maintenance:&lt;/b&gt;&lt;br /&gt;&lt;br /&gt;- Feed module and separation roller tires: tire life will vary depending upon paper types environment and cleanliness. Normal tire life is approximately 500000 pages; results will vary. Degradation of feeder performance multiple feeds stoppages etc. indicate a need to change tires. It is also recommended that all tires on the feed module &amp; separation roller be changed at the same time. The kit includes extra tires in the event one is damaged when replacing tires.&lt;br /&gt;- Feed module and separation roller: it is recommended that you install a new feed module and separation roller approximately every 7th tire change. Install a new feed module and separation roller at the same time.&lt;br /&gt;- Pre-separation pad: change every other time you change the feed module separation roller or change the tires.