Steel 4-Point Caltrop – 3cm, Pack of 30, Durable Metal for Outdoor Ground Use & Security Applications

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sebwiers posted on r/bicycling1w

Ebay. Or Walmart! https://www.walmart.com/ip/Steel-4-Point-Caltrop-3cm-Pack-of-30-Durable-Metal-for-Outdoor-Ground-Use-Security-Applications/20270818343

Steel 4-Point Caltrop – 3cm, Pack of 30, Durable Metal for Outdoor Ground Use & Security Applications | eaves-shop