Sealey Imperial Tap & Die Set Split Dies BSW 28pc Features: 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. Technical Details: • 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 • Model No. AK3028BSW Additional Information: • British Standard Whitworth (BSW) high quality alloy steel taps and dies. • Split dies with machined lead-ins. • Die holder features self-centring