Bondhus invented the Balldriver — the ball-end hex key that lets you engage a fastener at an angle up to 25 degrees off-axis — back in 1964 in Monticello, Minnesota, and the company has been producing hex tools in that same Midwestern facility ever since. Every wrench is cold-formed from proprietary Protanium high-torque steel, then heat-treated for a 20-percent torque advantage over standard alloy steel.
The 10937 is the 13-piece Balldriver hex key set that’s lived in more mechanic pouches than any other Bondhus tool — a comprehensive SAE range from 0.050 inch up to 3/8 inch in a ColorGuard pouch. The ball ends let you engage a fastener at up to a 25-degree angle when you can’t get a straight shot, and the Protanium steel shrugs off the torque that rounds out cheaper wrenches.
Bondhus has been family-owned and American-made in Monticello, Minnesota since 1964, where they still machine and heat-treat every Balldriver and hex key on site. The company backs the full line with a lifetime guarantee against manufacturing defects.
