... . Order: 10000PCSTransportation: Air Freight, Sea FreightCeramic Ferrule for Stud Welding Ceramic Ferrules are specially designed for various studs welding. The Products ... the best prices ,we have almost all specification of the ceramic products .Such as M 6 ,M 8 ,M 10 ,M ... 16 ,M 19 ,M 22 regular and penetrable etc .our ceramic protective ferrules cooperated with our jointing nails were used in ...