Sawyer Inline Adapters for Screw On Filters<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Adapters convert your Sawyer screw on/off filter into an inline hydration system </span></li><li><span class="a-list-item"> Compatible with the Sawyer Squeeze Filter and the All In One Filter </span></li><li><span class="a-list-item"> Turn your Sawyer screw on/off filter into an inline filtration system for your hydration pack with this simple accessory </span></li><li><span class="a-list-item"> Screw the connections onto the each side of Squeeze filter， then insert the filter inline into your hydration pack drink tube </span></li><li><span class="a-list-item"> Compatible with the Sawyer Squeeze Filter (SP129， SP131) and the All in One Filter Hydration Pack (SP181); not included </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31Bex5mURoL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41D1kcsMpPL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51OqdtT-Z6L.jpg" noproxy>