I finally found heavy duty clothespins
HINOSI 30pcs Large Wooden Clothespins, Sturdy and Heavy Duty Clothes Pins for Hanging, Outdoor, Crafts
The Large Wooden Clothes Pins are perfect for hanging clothes, crafts, closing bags, and hanging decorations. They are very durable.
AllTopBargains 40 Pcs Wood Clothespins with Spring 2 7/8 Large Heavy Duty Clothes Pins Crafts
Wooden Clothespins & Laundry Clips, Lifetime Guarantee
Natural Wood Classic Round Clothespins (100-Pack)
【Quality clothespin】Made of bamboo; Light, durable, not easy to break or bend. Strong, strong, high toughness, clamping tight, indoor and outdoor can
AKOAK 24 Pieces Bamboo Clothespins - Clothes Pins, Heavy Duty Outdoor Springs, Crafts, Picture Baby Hanging Clothes Wood Clothespins
Heavy Duty Clothespins
Wood Clothes Pins Heavy Duty Traditional Wooden Laundry
Clothes Pins 3.5 Inch Heavy Duty Wooden Clothespins Wooden Clips