单舌小插芯
仅有斜舌，不防插，仅适用于家庭内门。（50/60/70mm门边距）
Only with latchbolt,suitable only for interior doors at home.（50/60/70mmbackset）
·易安装。
·采用三圈簧结构，使钥匙的开启手感特别好。
·弹簧拨板及锁定片用渗碳技术淬硬，使抗破坏力矩达到国标的三倍（国标为17牛顿.米）
·弹簧全部采用进口琴钢线制作，可保证机械使用寿命十万次。
·本厂专利结构（专利号：ZL 02 2 43625.1),执手不分左右。
·Easy to install.
·Tri-circle are hardened by carbonization.
·Steel parts are hardened by carbonization.
·Spring is made of wire imported from south Korea.100,000 cycles are guaranted.
·Handle can be easily changed to fit the door direction.
