MOUNTAIN BIKE THUMB SHIFTTOP SHIFTER GEAR LEVERS 6,12,18 SPEED ATB ALL BIKES NOSMOUNTAIN BIKE THUMB SHIFTTOP SHIFTER GEAR LEVERS SUITABLE FOR 6,12,18 SPEED ATB ALL BIKES NOSTHESE ARE A HARD TO FIND PAIR OF HANDLEBAR MOUNT THUMBSHIFT GEAR CHANGE LEVERS FOR MULTISPEED BIKES AY A VERY LOW PRICETHESE WERE USED EXTENSIVELY ON EARLY MOUNTAIN BIKES SO IDEAL FOR EARLY MTB RESTORATIONS OR FITTING ON TO MODERN ADULT AND CHILDRENS BIKESCAN BE USED WITH 6 , 12 OR 18 SPEED GEAR SYSTEMS , INCLUDING SHIMANO OR OTHER BRANDS OF GEAR SYSTEMS RIGHT HAND SHIFT-LEVER IS 6 SPEED INDEX ( one click for each gear change )LEFT LEVER IS FRICTION AND CAN BE USED WITH DOUBLE OR TRIPLE CHAINWHEEL SETS.THESE ARE NEW OLD STOCK NEVER FITTED TO A BIKEMADE TO FIT ALL STANDARD 22.2mm (7/8″) HANDLEBARSSUPPLIED COMPLETE WITH INNER CABLES ( WIRES )MADE BY FALCON