Lang Tools 446 Cylinder Sleeve Hold Downs

Specialty nuts are used to hold down cylinder sleeves during service. Allow motor to be turned over with heads off. Nuts fit 3/8-16 UNC thread. Feature 3/4 hexagon with a small cylinder protruding down to catch the cylinder stud. Case-hardened and zinc-plated. For Evolution Big Twin Sportster and Twin Cam w/ 3/8 stud.