Cleco Starter Kit Includes: (10 ea.) 3/32 in. dia. x 1/4 in. grip Clecos(Silver Color) (10 ea.) 1/8 in. dia. x 1/4 in. grip Clecos(Copper Color) (10 ea.) 3/16 in. dia. x 1/4 in. grip Clecos(Gold Color) (1 ea.) Set Cleco Pliers Clecos are like an extra set of hands - you will use these often The Cleco system is a re-usable spring loaded fastener, basically serving as an easy-to-use temporary rivet. They will pull together two or more layers with a total thickness up to 1/4" thick - that's impressive! Often referred to as a removable panel fastener or Cleco pin, they're a very helpful tool for a fabricator and priceless. Clecos provide fast and positive positioning! When satisfactory final fit up is achieved, the drilled pilot hole may be either plug welded, riveted or drilled larger to the appropriate size for a finished mounting bolt, Dzus type button or Cam lock fastener. Clecos provide a third hand with: Body Panels Lexan Windows Interior Tin Floor Boards Firewall / Dash Wing Skin Locating tabs for welding Compatible materials: Steel Aluminum Magnesium Carbon Fiber Fiberglass Lexan Pro-werks Clecos are color coated for quick size identification Cleco sizes & colors: 3/32" diameter x 1/4" grip (Silver Color) 1/8" diameter x 1/4" grip (Copper Color) 3/16" diameter x 1/4" grip (Gold Color) Be prepared to fill up your tool box! The Pro-Werks Cleco Fastener Kits are great starter packages, and also make a perfect gift for a friend. If you need more of this temporary fastening system for large projects, additional Cleco fasteners are available in convenient packs of 10. Extra Cleco pliers may be purchased individually also.