Heavy-duty fiberglass handle for 6 to 16 lb and some 18 to 24 lb sledges and mauls. Link handles are better by design! When you buy tool handles, you need handles with the proper fit. The handle becomes an extension of your body and determines your comfort. Link handles provide the time tested ergonomic shape and design that allows for better control, comfort and safety Fiberglass handles are strong, lightweight, and do not conduct electricity. Fiberglass, however, is not flexible and does not absorb shock.