2 Pack Zinc Cast Metal Left and Right Sliding Cam Window Lock Sliding Window Cam Locks from PrimeLine Products are constructed of zinc diecast material and come in a mill finish These locks and keepers are used on both residential and RV sliding windows The set includes one left hand, and one right hand latch, and the mounting holes on the locks measure 78 in on center, with the center mounting holes measuring 1116 in on center, on the lock keepers These locks are easy to install with a few simple tools