UHMW (ultra-high molecular weight) polyethylene comes in black.
Lee Valley doesn't seem to sell the black piece alone but black ones do show up in the assortment pack.
h ttp://www.leevalley.com/en/hardware/page.aspx?p=43210&cat=3,43576,43581
Lee Valley doesn't seem to sell the black piece alone but black ones do show up in the assortment pack.
h ttp://www.leevalley.com/en/hardware/page.aspx?p=43210&cat=3,43576,43581