The spacewalkers have successfully completed the installation of the new SIC&DH into the telescope and the old unit into its carrier in the space shuttle's payload bay. Grunsfeld also installed a soft capture mechanism, which will allow future vehicles to attach to the telescope. The mechanism was attached to the flight support system that connects the shuttle to the telescope.

Their final scheduled task for the day will be to install three latch-over-center kits that will allow for faster opening and closing of the telescope doors during the third spacewalk.

 source: nosa.gov