As of June, 2016, La Marzocco have started selling this rebuild kit that includes the H.1.024 "Kalrez" o-rings, which purportedly have a life that lasts three times as long as the old kits which used the H.1.011 For an instructional video detailing the mechanical paddle rebuild process, please see La Marzocco's Mechanical Paddle Service Guide. 1 x H.1.016 1 x H.1.018 1 x H.1.019 1 x L103/B 1 x L103/A 3 x H.1.024 3 x H.1.010