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Amazon.com: Julius Koch Ritza Tiger Thread JK15 Blue 1.2mm (25 Meter) Sample Length Braided Polyester Leather Sewing Thread (100 Meter)
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Amazon.com: 0.6mm Ritza 25 Tiger Thread - Braided Polyester Thread - Waxed for Leather Hand Sewing - Made in Germany - Full Factory Sealed Spools Manufactured by Julius Koch - 1000 Meters, Egyptian Blue - JK87
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Amazon.com: 0.6mm Royal Blue Ritza 25 Tiger Waxed Polyester Thread 25-1000m Length (100m). Julius Koch Leather Hand Sewing Thread
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