Checkpoint CPMASY33 Checkpoint Medium Arrow Wheel nut indicator - Solid Yellow 1 5/16 in (33 mm) (Bag of 100 pcs)


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Checkpoint CPMASY33 Checkpoint Medium Arrow Wheel nut indicator - Solid Yellow 1 5/16 in (33 mm) (Bag of 100 pcs)

  • Checkpoint® original but with a shortened arrow
  • An instant visual indicator of nut movement
  • Indicates possible faults with breaks or bearings through melting
  • Melts at a specific temperature of 125ºC/257ºF
  • Supports fleet safety checks
  • Cost-effective and easy to implement
  • The world's first biodegradable wheel nut indicators*
Checkpoint Medium Arrow has all the benefits of the Checkpoint® original but with a shortened arrow. This version is designed for 10 stud wheels with 285 pitch circle diameters (PCDs). The Checkpoint Medium Arrow visually indicates nut movement. By placing the Checkpoints in a recognisable pattern such as point to point, any movement of the nut is clearly visible at a glance. This assists the visual inspection of lug nuts, identifying when a nut loosens, to help prevent the wheel from coming off. It also melts at a specific temperature (125ºC/257ºF) to highlight any overheating issues with the wheel or application. Checkpoint® Medium Arrow provides a clear commitment to health and safety, and roadworthiness to other road users, and road and transportation associations such as: DfT, FORS, DVSA, HSE, FTA and RHA. *Tested and verified by ASTM D5511 for enhanced biodegradation in biologically active landfills, saving the planet from over 200 tonnes of plastic waste each year.
Certifications TÜV-SÜD


Materials High-grade virgin polymer to ensure product quality and performance reliability for overheating indication.

Warranty Information


Martins Industries warrants to the original purchaser that its products are free from defects in material and workmanship. This coverage is valid for a period of 6 months to 3 years, depending on the product, starting from the billing date. The warranty will be voided if the product has sustained damage due to misuse, improper assembly, poor maintenance, any accident or any non-authorized modifications / repairs.

Any other information please call us up at 800-562-4791.

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