I will list the required quantity!! Please contact me. ★ You can extend your shaft by 0.5 inches or 1 inch. It can be extended easily by gluing it to the butt end of the shaft. ※ When working, lightly sand both bonding surfaces with sandpaper, etc., to make it easier for the adhesive to adhere. ※ Be sure to use adhesive (acrylic or epoxy). ※ Please refer to the size of this product and check the inner diameter of your butt end before using. ************ Price: ¥510 per piece Additional pieces are ¥290 each (If you wish to add more, I will revise the price) ******* Please check the butt diameter of your shaft and use it!! Please specify either of the following!! --------- - ★Size (approx.) 0.5 inch★ (Total Length x Bonding Part x Thickness) 31.0mm x 18.3mm x 15.0mm / Weight 4.7g ----<Size is manufacturer's value / Material: ABS>-- ★Size (approx.) 1 inch★ Total Length x Bonding Part x Thickness (46.1mm x 20.6mm x 15.0mm / Weight 7.4g) -------- ★ The inside of the part is not hollow. ★ Material: ABS ※ If you skimp on the adhesive, the bonded part will peel off, causing play inside the grip, and re-adhesion will be necessary. Also, shaft extension is not recommended, so please be careful of accidents during use (shaft breakage, etc.) ※ Please use at your own risk. [Basic Swing Weight Change Table] Adding (reducing) weight to the head: Approximately 1.5 to 2.5g, 1 point up (down) Adding (reducing) weight to the grip end: Approximately 4g, 1 point down (up) Reducing (adding) shaft weight: Approximately 5 to 10g, 1 point down (up) Reducing (adding) grip weight: Approximately 5g, 1 point up (down) Increasing (decreasing) club length: Approximately 1 inch, 5 to 6 points up (down) ※ The above are only basic values and will vary depending on the length and center of gravity of the club. Also, the change in points becomes more sensitive as the club gets longer. ◎ Please use the purchased product at your own risk. ※ The sizes and weights listed are manufacturer's values. There may be slight errors.