... holes Factory Spring door bolts(door lock, latch), furniture hardwareBasic Introductions 1) Components: lid & spring bolt 2) Material: National standard zinc alloy ... .5*81, holes distance: 48mm * 30mm5) When press the buttone, bolt will automaticailly open6) Often used on the behind of door ... , excellent price, best service. Waitting for your contact. Spring door bolt/latch, Hotel safety guard lock