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. 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. 4.5, 5, 5.5, 6,7 mm, 1/4. Valve Guide Reamers H. 2 x T – HANDEL. 2 x DRIVE RODS. FAST & ECONOMICAL VALVE SEAT RESTORATION SYSTEM.