- fully beaded and combed. - projecting mounts and underbushings are imitation ivory (speciality made Delrin product) and are threaded into place. Other materials available (see options) - threaded stock ferrules are open and the 4 drone ferrules are closed (capped) - threaded metal ring caps include bushings - metal is available in either nickel, stainless steel, aluminum or brass - blackwood blowpipe and blowpipe stock are Poly lined to prevent cracking