Lock Case Depth: 93 mm Backset: 60 mm features: Latch bolt operated by lever handle or knob Quick reversible latch for left or right hand Heavy sprung suitable for unsprung furniture Smooth action ball bearing follower for 8 mm spindle provides 25 degree follower action Positive follower angle of 1 degree reduces the effect of wear which can lead to lever droop The case is galvanized steel, 16mm wide Narrow 20 mm wide single piece forend in grade 316 stainless steel Fixing screws included