Ducati Valve Spring Compressor Tool 200 250 350 450 single bevel BSA Engine The card in the box

The card in the box with these bolts notes "pursuit lights"

It will NOT fit round reservoir m/cyls

used for lining up rockers and shims during valve adjustments

But here they are

These parts are suitable and required to run a tachometer drive on your bevel single or early twin

Ducati Valve Spring Compressor Tool 200 250 350 450 single bevel BSA Engine The card in the boxModeled after the factory piece, part # 88713 0267, it will certainly fit any bevelhead single, and many other makes and models with hairpin valve springs. (SOME other makes have their head bolts in the way (MV) and require a different method, please be sure this will work for you before purchasing)