Compatibility 3-way staples: staple gun compatible with 4-14 mm door staples (Type 53, JT21 TR45), 10-12 mm U-staples (Type 91) and 10-14 mm T-staples. Staple gun with 900 staples: complete with 300 door staples, 300 cable staples and 300 brad nails. Pressure adjustment: adjust the pressure depending on the thickness of the material you are stapling. Perfect for: staple gun for wood, insulation, carpentry and upholstery, re-upholstering furniture, decorating, repairing blinds, repairing chairs, applying fabric to walls, creating pictures and fixing plywood. Package list: 1 x Stapler, 300 x Door-shaped Staples (8 mm), 300 x U-shaped Staples (12 mm), 300 x T-shaped Nails (10 mm). Please note, this stapler has a staple width requirement: U-shaped staple width (10-12 mm) (Type 91), Door-shaped staple width (4-14 mm) (Type 53, JT21 TR45), 18 Gauge staple width (10-14 mm).