Adjustable Comb Hardware "Base plates and comb bushings are made of aircraft aluminum; the post, screws and nuts are stainless steel, for a rust free working unit. Wrenches are included. "Note: Some skeet & sporting clay stocks require extra work, please call us for a quote on your stock. Installation includes spacers and wrenches. Installed on Trap Stocks .... $250.00 Plus Return Shipping & Handling Special process required on most Sporting Clays Stocks .... $300.00 to $350.00" From Rod's Custom Stocks