7/8" SINGLE THROTTLE FOR THE T140 2 INTO 1 CABLE SYSTEM, THE TR20, TR25, BSA SINGLES AND MOST BRITISH SINGLES IN GENERAL. MADE BY EMGO, A GREAT REPLICA AND VERY AFFORDABLE. LOOKS GREAT ON MOST CUSTOM BIKES WITH 7/8 HANDLEBARS.Chromed steel housing, 4 1/2" long tube. Total length is 5 1/2" long. This a replica Amal part # 364/18.