I have a couple of balisongs in my collection which are very close in a number of aspects. They are the Bali-Song Custom (USA) and the Parker Hand Made (Japan). Virtually the same in many aspects, there are some differences in construction. The stainless steel handle thickness on both knives is nearly the same, with the Parker having more cylinder shaped radius and only single drilled holes. The Bali-Song has small pin cups that appear to have been made by hand grinder (each cup is a slightly different shape/depth), while the Parker has cups that were made using a flat end mill. The Bali-Song has a longer but thinner tang pin compared to the shorter and fatter Parker pin. While the blade lengths are the same, the Parker has a thicker 3/16" blade and the Bali-Song measures a thinner 5/32". The Bali-Song has a noticeably thicker T latch, and the Parker has a thin one. Both knives handle/flip about the same, and the weight is very close with the Bali-Song at 7.8 oz and the Parker at 8.2oz. I suspect the Parker is heavier mainly due to the fewer handle holes and thicker blade. Both knives have minimal side play. The Parker originally had a satin/rubbed finish when new--I changed that years ago with a high polish on the blade, handles and latch/end. I also polished the latch/end and handle flats on the Bali-Song. Both are exceptional old school channel balisongs.