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.