The 130 synchronizer for Engineering vehicle . 1.material:20CrMnTi 2.Small order ... produce different kinds of gears for motorcycle and automobole,have a rich experience in it .You can send me your ... the quotation asap,we are a big factory will give you a competitive price .Hope to build a bussiness relationship with you ! ... (model,number of teeth,outside and inside diameters,thickness) 130 synchronizer