WISEMAN MODEL SERVICES EXTENDED KNUCKLES FOR KADEE 803 COUPLERS PEWTER CAST DETAIL PARTS SET OF 4 AS SHOWN REQUIRES INSTALATION INTO EXISTING KADEE 803 COUPLERS NOT INCLUDED ALLOWS On3 HEIGHT COUPLER CARS AND LOCOMOTIVES TO MATE AND STAY COUPLED TO BACHMANN On30 COUPLER HEIGHT MODELS AND OTHERS. ALSO INCLUDES AN ADDITIONAL SHORT SHANK FOR MODIFYING THE COUPLERS TO FIT MOST LINK & PIN STYLE COUPLER POCKETS. AN EXCELLENT TUTORIAL FOR DOING THE MODIFICATION ON A SIMILAR COUPLER IS ON THE FOOTHILL MODEL WORKS WEB SITE. QUANTITY 4 INCLUDED AS SHOWN IN THE PICTURES. SEVERAL HAVE SHOWN CONCERN ABOUT THESE BEING STRONG ENOUGH IN PEWTER AND EASIER TO INSTALL OPPOSED TO BRASS. BE ASSURED THEY WILL WORK FINE AND ARE MUCH STRONGER THAN THE ORIGINAL PLASTIC KNUCKLE IN THE KADEE COUPLERS. CASTING(S) AS SHOWN QUANTITY SHOWN IN PICTURE IS NUMBER INCLUDED PER ITEM PURCHASED NEW IN ORIGINAL PACKAGING SEE OUR OTHER LISTINGS FOR MORE BACK SHOP PARTS  WILL BE CAREFULLY PACKAGED FOR SHIPMENT. SEE OUR OTHER LISTINGS FOR MANY MORE NEAT ITEMS AS WE ARE LISTING THEM IN MANY CATEGORIES.