Mission R2.5 Rapid Dart Points - Point Changer Tool - Black. The R2.5 Tool is a compact and convenient accessory designed to securely tighten R2.5 points into dart barrels with ease. Precision-machined with stylish contoured edges, it provides enhanced grip and control during use, while its durable construction and pocket-sized design make it perfect for quick point changes at home or on the go.