Fantastic new design by Chiarugi. This set has five tips and adjustable bases in 45mm, 46mm, 47mm and 48mm. Designed for players who work internationally, the base of the staple can be changed to accommodate the need to play at different pitches. The bore of the staple is the 2+, so it is the same as Howarth and Rigoutat branded staples. These staples are a quality product well worth the investment.