Cuesoul Engine V1 Darts – Soft Tip – 90% Tungsten – Hope Ring – Green – 21g. Welcome to the Cuesoul Engine range of darts. Expertly machined with unique high level of grip designs, they are coated in a black titanium finish with red rings incorporated in to the design. Each set also carrys an integrated coloured hope ring in the barrel design. Complete with colour matching integrated flights and shafts.Cuesoul Engine V1 Darts – Soft Tip – 90% Tungsten – Hope Ring – Green – 19g. Welcome to the Cuesoul Engine range of darts. Expertly machined with unique high level of grip designs, they are coated in a black titanium finish with red rings incorporated in to the design. Each set also carrys an integrated coloured hope ring in the barrel design. Complete with colour matching integrated flights and shafts.