Ming Long Spear Duck Tongue Tip

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specification Total Length 3 cun 寸 5 fen 分 . Spear tip 1 cun 寸 5 fen 分 , with a thick and tall spine, the edges should be sharp. Spear socket 2 cun 寸 with diameter 5 fen 分 . Socket should be hollow, with the spear shaft insert all the way to behind tip with no gaps.  cun 寸 = 3.11 cm, fen 分 = 0.311 cm  Tip no heavier than one tael 兩 (37.5 grams or 1.33 oz).  A lighter tip is a better tip. Spear head tip width half cun 寸. The spear pole is 9 chi 尺 7 cun 寸. (3 meters or 9.8 feet) chi 尺 ~= 31 cm / 12.7 inches Unable to find proper spearhead for Ming Long Spear training after exhaustive search,  LK Chen develops this light and quick spearhead according to the prescriptions lay down in the Ming Spear Manual.    For everyone who wants to explore and experience the peak of Chinese spear techniques, this spearhead is invaluable. Available for order or as free-shipping add-on to other swords. Total Length  10.5 cm  (4") Socket Length 6.5  cm (2.56") Tip 4 cm (1.57") Weight 37.6 grams (1.33 oz) Investment/lost wax casting with stainless steel.     Heat treatment for increasing the hardness. Investment  casting (also known as lost-wax casting in the art world), is the  oldest known metal forming technique.  The key benefits are versatility,  accuracy, repeatability, integrity, and the wax can be reused.  I