60%Bronze filled PTFE Teflon guide strip main applications: Ptfe is small coefficient of friction on surfaces,very close to its dynamic and static coefficient of friction,and its wear-resisting is improved after being filled. And meanwhile,the ptfe surface treated can be convenient to metal adhesion. The tapes are widely used as guide materials in CNC lathe,milling machine,grinding machine,drilling machine,making machines working more smoothly, and long life,and greatly improves machining precision. specifications and sizes: performace: