Sea & Sea RDX Port Base S SS-30108 Free Shipping on Orders Over $200 to the US and Canada SKU: SS-30108 Sea & Sea RDX Port Base S Part # SS-30108 Product Overview: Fits all Sea & Sea RDX style underwater housings, like the T1i, T2i, T3i, T4i, T5i housings Use with compact macro port 111 for the Canon 100mm macro lens Please refer... MSRP: Was: Now: $169.95 Add to Cart