- Delivery & Returns
- Size Chart
Harken 437 16mm Flip Flop Air Block.
- Sheave diameter: 16mm
- Length: 34mm
- Weight: 21g
- Maximum line diameter: 5mm
- Maximum working load: 113kg
- Breaking load: 544kg
Delivery & Returns
You can select your preferred delivery option or local pick up from Rooster at checkout.
We are happy to accept your returns so long as you send them back within 90 days.
For full details on all our terms and conditions click here.
Thank you for being a customer of Rooster, if you have any questions please use our online chat, call or email.
Phone: +44 (0)1243 389997