The bostitch 21684b e wide crown stapler is a professional grade headless pinner with a small compact design for better access to the workspace variable power control and a secondary safety trigger suitable for furniture manufacture ideal for moulding and trim work weight 083 kg dimensions length 221 mm width 150 mm height 40 mm staple length 4 mm min 16 mm max diameter 05 mm min 1 mm max magazine capacity 125 max operating pressure psi 80 120 bar 49 84 air consumption ltrper shot 56