Carbon Express Pin Point .166 Size 2 110-90 gr. 12 pk.. Fits Carbon Express .166" ID shafts. Size 2: 600-900 spine 110-90 gr. Size 3: 1000-1200 spine 100-80 gr. Package Contents: Carbon Express Pin Point Steel point with cone pin point design to eliminate deflections. Fits Carbon Express .166 ID shafts. Size 2: 600-900 spine 110-90 gr. Size 3: 1000-1200 spine 100-80 gr.