Durable and reliable quality wheels and casters for wide applications in varieties of materials, offer custom-made wheels and casters according to customers' requirements. Solid wheels with Soft Rubber Tread and Hard Rubber Cord (SR serious) Solid wheels with All Hard Rubber (HR serious) *** shows the item is available with roller bearing bushing Item Wheel Tread Hub Bore Loading Diameter Width Length Size Capacity SR1012 25 mm 12 mm 13 mm 4.7 mm 8 kgs SR1414 32 mm 14 mm 16 mm 5.0 mm 12 kgs SR1518 38 mm 18 mm 20 mm 6.0 mm 20 kgs HR1518 38 mm 18 mm 20 mm 6.0 mm 25 kgs SR2020 50 mm 20 mm 24 mm 6.5 mm 30 kgs HR2020 50 mm 20 mm 24 mm 6.5 mm 36 kgs SR2024 50 mm 24 mm 27 mm 6.5 mm 38 kgs HR2024 50 mm 24 mm 27 mm 6.5 mm 40 kgs SR2520 63 mm 20 mm 24 mm 6.5 mm 30 kgs HR2520 63 mm 20 mm 24 mm 6.5 mm 36 kgs SR2525 63 mm 25 mm 28 mm 8.0 mm 40 kgs HR2525 63 mm 25 mm 28 mm 8.0 mm 45 kgs SR2528 63 mm 28 mm 35 mm 8.0 mm 45 kgs HR2528 63 mm 28 mm 35 mm 8.0 mm 50 kgs SR3020 75 mm 20 mm 24 mm 6.5 mm 35 kgs HR3020 75 mm 20 mm 24 mm 6.5 mm 40 kgs SR3025 75 mm 25 mm 28 mm 8.0 mm 50 kgs HR3025 75 mm 25 mm 28 mm 8.0 mm 55 kgs SR3032 75 mm 32 mm 39 mm 9.5 mm 68 kgs *** HR3032 75 mm 32 mm 39 mm 9.5 mm 80 kgs *** SR3520 88 mm 20 mm 24 mm 6.5 mm 40 kgs HR3520 88 mm 20 mm 24 mm 6.5 mm 45 kgs SR3532 88 mm 32 mm 39 mm 9.5 mm 70 kgs *** HR3532 88 mm 32 mm 39 mm 9.5 mm 80 kgs ***