British Standard Whitworth (BSW) high quality alloy steel taps and dies. Split dies with machined lead-ins. Die holder features self-centring mechanism for straight and accurate thread cutting. Set includes taps (taper and plug) and dies in each size, tap wrench, T-bar tap wrench, die holder, thread gauge. Supplied in storage case. Features and Benefits • British Standard Whitworth (BSW) high quality alloy steel taps and dies. • Split dies with machined lead-ins. • Die holder features self-centring mechanism for straight and accurate thread cutting. • Set includes dies and taps (taper and plug) in each size, tap wrench, T-bar tap wrench, die holder, thread gauge. • Sizes: 1/8"-1/2". • Supplied in storage case. • Model No. AK3028BSW Specifications Model No AK3028BSW Brand: Sealey Contents: Taps (Taper & Plug) & Dies (BSW); 1/8" x 40, 5/32" x 32, 3/16" x 24, 1/4" x 20, 5/16" x 18, 3/8" x 16, 7/16" x 14, 1/2" x 12, Die Holder, Thread Gauge (BSW), T-Handle Tap Wrench, Tap Wrench Nett Wei