The alloy steel socket fits into any 3/8" drive speeder handle, which means it can be used with other products from Sk Professional Tools' product line. With a 16 3/4 in. The Sk Professional Tools 45181 3/8" Drive Speeder Handle is an essential addition to your tool collection.overall length, this Sk Professional Tools 45181 3/8" Drive Speeder Handle is the perfect tool for loosening or tightening nuts and bolts.