Thank you for viewing. ■ Shaft diameter: 9mm ■ W1/2 screw (4 minutes) ■ Material: Stainless steel SUS304 ■ Weight: 180g +- This is a fishing flying gaff dedicated to achieving quick penetration and secure hold. The spring push pin strength can be adjusted with a hex L-wrench from the bottom of the screw, allowing you to pre-adjust the amount of force you want to apply. Also, a protective cap is included for safe transport. Although unused, please note that there may be small scratches from storage. Also, due to the soaring cost of materials, we plan to slightly increase the price in the future. Thank you for your understanding.