Here at BCF we carry a massive range of parts and accessories to go with our huge range of products so no matter what you find yourself needing, if it's related to Boating, Camping or Fishing you're sure to find it. The Blueline Black Nylon Thumbscrew twin pack is designed primarily for use with biminis and canopies in the boating world, but there are many more uses too. When used in conjunction with a bow knuckle, you have a very effective and efficient clamp system that remains completely adjustable, and as a result they are widely use on biminis to fold them up or down, as well as adjusting their tension. Made from hard-wearing nylon and stainless-steel, these thumb screws are built tough to deal with the harsh marine environment. For the full range of parts and accessories available at BCF, call into our store and talk to one of our friendly, knowledgeable staff to find the part that's right for you.