The Bondhus 10637 is a 13-piece Balldriver hex screwdriver set covering the full .050 inch through 3/8 inch imperial range — the comprehensive imperial set that handles small precision sizes through full-size socket-head cap screws. Each driver puts the hex tip on a comfortable handle for sustained turning.
Use it as a workshop primary hex set for American-spec hardware, machinery maintenance, automotive applications, and any imperial socket-head fastener. The 13-piece coverage avoids gaps in size — every common imperial hex from precision tiny up through 3/8-inch heavy fasteners is covered.
Bondhus has been making American hex tools at its Monticello, Minnesota facility since 1964. The Balldriver design is a Bondhus original.
