Habachain, 821, slat top chain, straight, heavy duty, low friction acetal, 10’l, 12″w habachain slat top 821 (straight) description: slat top 821 is a heavy duty straight running only plastic chain. Top plate thickness 4.8 mm. Applications include packaging and bottling lines. Use 821series for side transfer with 882 series radius chains. pin material: stainless steel standard packaging: 3.048 m = 10 ft the weight specification is indicative other materials on request