This is an offside rule spool, made expressly to wind on agriculture monofilament.
As many other light-weight spools is used also to wind cables, 3d printing filament, electrical wires, longlines for fish, ropes, strings, zippers, metal ropes and gardening wire.
extremely light, with great capacity, made in two welded pieces is really cheap if compared to its sizes.
Spool usually produced in high impact polystyrene (PS).

(F51)

• d1: 335 mm
• d2: 190 mm
• d5: 51 mm
• d4: 51 mm
• d5: 20 mm
• e1: 70 mm
• l1: 245 mm
• l2: 220 mm
• Winding volume: 13147 cm3
• Nominal weight: 1050 gr.

(F31)

• d1: 335 mm
• d2: 190 mm
• d3: 51 mm
• d4: 51 mm
• d5: 20 mm
• e1: 70 mm
• l1: 245 mm
• l2: 220 mm
• Winding volume: 13147 cm3
• Nominal weight: 1050 gr.