Valve Job Seat Cutter Set Carbide Tipped For Motorcycles 3 angle. Valve Seat cutter Kit Carbide Tipped. 3 Angles Cut Performance Head 30 Degree, 45 Degree, 60 Degree Racing Kart, Clone, Predator, Hemi, Honda, Briggs, BSP most Motorcycles or engines if they have a 4.5, 5, 5.5, 6,7 mm, 1/4 mm valve stem, If you are building or rebuilding your own small engines, either for performance or just a quality rebuild, this gives you control of cutting your own valve seats you can do a standard 45 degree seat or even 3 angle seat with this set… You can move the sealing surface on the seat for best performance… This is ONLY if you have 4.5, 5, 5.5, 6,7 mm, 1/4 valve stems this kit comes with the following. 1st Top Angle & 2nd Base Angel Cutters Valve seat cutters. 22 mm 30,45 degree. 23 mm 30,45 degree. 24 mm 30,45 degree. 25 mm 30,45 degree. 26 mm 30,45 degree. 27 mm 30,45 degree. 28 mm 30,45 degree. 29 mm 30,45 degree. 30 mm 30,45 degree. 32 mm 30,45 degree. 34 mm 30,45 degree. 3rd Throat Angle Cutters. 23 mm 60 degree. 25 mm 60 degree. 28 mm 60 degree. 30 mm 60 degree. 32 mm 60 degree. Valve Guide Stems : 4.5, 5, 5.5, 6,7 mm, 1/4 Valve Guide Reamers H. S 4.5, 5, 5.5, 6,7 mm, 1/4 2 x T – HANDEL 2 x DRIVE RODS WOODEN CASE FAST & ECONOMICAL VALVE SEAT RESTORATION SYSTEM Please know this is for hobbyist & professionals builders Racers who build their own engines, or small volume high performance engine builders, If you are building your own racing Kart, Trike, or mini bike, or any engine with 4.5,5,5.5, or 7 mm valve guilds, then this will put you well ahead of those who do not have the ability to have a 3 angle or multi angle valve job. Or if you don’t want to wait weeks to have it done from some outside “machine shop”… Even do a few valve jobs for friends and this will pay for itself MANY times over.