BikeMaster 12-Blade Combination Tappet And Feeler Gauge Set BikeMaster is a brand that focuses on quality, performance, and value priced products for motorcycles and ATV's. Blades: dual marked 0.203 mm / 0.008" to 0.660 mm / 0.026". 4" long taper blades, hardened and polished. Manufacturer's lifetime warranty.