A needle use for sapphire samples. It is an injury needle used by precision manual scriver.
■ Features
・ It is the best injury needle for injurning samples such as sapphire and quartz glass.
・ There is a line at the bottom of the needle to distinguish it from the injury needle (OS3P).
■ Use
・ Squered carbide (SIC)
·sapphire
・ Quartz glass ... etc.
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