3/8-26 Whitworth Thread Repair Kit Heli Coil for Triumph Norton BSA
10 piece Whitworth 3/8-26 thread repair kit, also well known as hell coil. The kit comes with 10 coils, a tap and an installation tool. Please do not attempt to do this if you are not handy with a drill and tap, it is important to drill and tap the hole straight. If you are working on any British car or motorcycle pre 1970 and you want it to be correct right down to the cover screws, this is the kit you need. The only other tool you need is a standard sized drill bit. We also have sockets and other tools you may need when working on your British motors. We will also be happy to assist you with any tools you may need, please just ask.