A large bent Billiard, Rattray's "20" shape is rather compact in overall length but features a bowl of Stack-like chamber capacity. It poses a sweeping bend that curls through the heel and into the bowl's fore, said bowl being more rounded and supple for comfortable ergonomics, and the stretched transition draws visual focus to the bowl while also offering space for a natural thumb rest when held.

Like Rattray's Beltane's Fire series, the Samhain line celebrates one of the four Gaelic seasonal festivals, specifically the one marking the end of the harvest and the beginning of winter: Samhain (pronounced "sah-win") or, as it's most colloquially known, Halloween. The festival falls on November 1st but the celebration traditionally begins on the night of October 31st, falling halfway between the autumn equinox and the winter solstice, and as with Beltane, bonfires are common during Samhain. For this commemorative Halloween line, the Scottish marque presents pipes in an extra-dark sandblast contrasted by an acrylic stem of intermingling black and scarlet hues for a deep, smoldering motif.