Phil Taylor played with these darts in major TV events in 2003. The Phase 3 Curve has additional grip and a grip groove at the end of the barrel. Made of high quality 90% tungsten, the weight has a tolerance of +/- 0.1g guaranteed. The barrels are available in 18g. The barrels have an engraving with the Unicorn logo and the designation Phase 3. Delivery 'Barrels only' in the Purist Wallet.