Bostitch U/LPF28WW-R 28-Degree Low Profile Wire Weld Framing Nailer (Certified Refurbished) Low profile design for getting in between rafters and tight spaces Selectable trigger to switch from single-drive to multi-drive mode with the flip of a switch Tool-free depth of drive adjustment designed for precise sinking of fasteners Adjustable rafter hook designed so end-users can use both hands when needed Last nail retention magnet prevents last nail from dropping out of the nose