Sta-PlugA(R) Mini Emergency PlugThe Sta-PlugA(R) Mini(TM), Forespar&';s form-fitting emergency plug. A soft cone-shaped design allows it to easily fill the irregular shapes of hull impact breaches, as well as any round hole leak from a hose or through-hull. Unique edge gripping riblets help hold the plug in a hole, keeping water out.Features: The Emergency Plug that Grips 4" High x 2" Diameter Convenient sized version of the popular Sta-Plug Emergency Plug Made from strong elastomer composites Not susceptible to mold or swelling Bright color allows it to be quickly located Meets US Sailing Special Equipment Requirements Equipped with a lanyard hole Dimensions: 4" (10cm) high, 2" (5cm) diameter at base Made right here in the USA NOT INTENDED FOR FUEL LEAKS