For most spark plugs with 16 mm and 21 mm hex. 180° swivel. Not suitable for Twin Cam models.

Classic Harleys well into the 1960s feature lots of slotted screws on engine, transmisison, primary etc. which you don´t want to tighten or loosen with a cheap screwdriver. It will mar the slots in no time and make you look a poor mechanic. This special edition The Cyclery screwdriver set includes the exact size screwdriver for most slotted screws you find on older H-D models. They feature hollow ground tips to perfectly fit the respective slot, avoiding damages and keeping your expensive hardware in good shape. The square shanked blades are hardened to R/C 52-56 and are guaranteed not to twist or chip. The handles are turned from Maine hardwood and protected with a nicely stained finish and a nickel plated steel ferrule. A quality wooden handle is key to a good grip with hands becoming slippery from oil and these screwdrivers provide that great wood handle feel that only gets better with time. Classy tools for classic bikes - an ideal combination....

Duplicate of the original tool used to remove and install OEM-type air cooled spark plugs with 1-1/8” (28.5 mm) hex.