Bondhus Combo Set Metric Ball End Hex Key Set 1.5-10mm 9 Piece With. Screw Grab BD14199Ball End inserts into a screw at a 25 angle allowing natural hand and wrist movement. A single dab of Screw Grab creates a positive grip between metal surfaces that virtually eliminates tool wear or rounding and deforming of fasteners. Hex Keys: 1. 5, 2, 2. 5, 3, 4, 5, 6, 8, 10mm + 15ml Screw Grab Friction DropsBall End saves time by quickly funneling tool into screwUp to 20% stronger, with more torque and higher wear resistance than standard