chain guard bolt (1)Model: EN3013,etc. (2)material:steel (3) ... 's name , address, tel, contact person, etc. Hangzhou Enyuan Hardware Factory ADD:Xintangtou Industrial Zone,Xinjie Town,Xiaoshan District,Hangzhou,Zhejiang ... : slide door latch /door bolt/slide door bolts/door guard/chain door guard 2. Model: EN 3013,etc. 3. Size: 4 ...