Heavy duty flat wire 10J galvanised staples for staple guns, hammer tackers, air and electric guns. Compatible with Silverline 3-in-1 Staple Gun and 20ga wide crown staplers. Also compatible with Workzone WZEN20, Powerfix Profi Z16531 and all 20ga 7/16 crown staplers. Dimensions: 20ga (11.2±0.1) x (1.17±0.02) x (0.62±0.01) 0.92mm wire.