23 gauge, headless pin nailer kit, fastener length: 1/2"-1-3/16", adjustable high/low power control sets pin depth without changing compressor setting, low profile nose piece tapers down to contact point for clear line of sight, kit includes: pin nailer, 1/4" air fitting, 500 count, 1/2" pins, 500 count, 3/4" pins, 500 count, 1" pins & case.