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Tool lock seat make it easy to change tool.
配备锁刀座，刀具更换方便。
youdao
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Valve Guide, Valve Seat, Valve Lock, Valve Spring Retainer, Casting Products.
气门导管，气门座圈，气门锁片，气门弹簧座，铸件系列。
youdao
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Valve Guide, Valve Seat, Valve Lock, Valve Spring Retainer, Casting Products.
气门导管，气门座圈，气门锁片，气门弹簧座，铸件系列。
youdao