Conformable Soft-Tip Set Screws with black zinc plated 1,Products DetailesMaterial1. ... /Threading/Secondary machine/heat treatment/plating/Anti-slipping/Baking/QA/Package/ShippingSample Availablitywe can make sample within 7 days free of ... Workshop show 4,Manufacture Process 5,Quality Control 6, Strong Package 7,Customer Feedback and Evaluation 8,We are the best ...