The Bostitch 84 Series Wide Crown Staples with 12mm leg length provide robust fastening power for demanding construction and upholstery applications. This pack of 10,000 staples is specifically designed for securing thicker substrates including dense insulation materials, heavy fabrics, roofing felt, and multi-layer fixing requirements where maximum penetration is needed. Featuring a 12.3mm crown width paired with a 12mm leg length, these Stanox staples deliver exceptional holding strength and stability even in challenging materials. The 0.5mm x 1mm wire gauge ensures reliable driving performance with minimal tool jamming. Designed for use with TU-216-84-E or other tools using 84 gauge staples, these professional-grade fasteners are the go-to choice for serious tradespeople who demand quality and performance. Features and Benefits: • 12mm leg length ideal for thick materials and demanding fixing applications • 12.3mm crown width provides maximum holding strength • 0.5mm x 1mm wire gauge ensures consistent, reliable fastening • Compatible with TU-216-84-E and other 84 gauge tools • Pack of 10,000 for excellent value on high-volume projects Specifications: Size (mm): 12 Pack Qty.: 10000