Screwdriver bit 1/4" 4 x 28mm hex.sph.h.
Screwdriver bit 1/4" for recessed hexagon screws, with ball head
Design: With ball retaining groove and knurled grip.
Made of GEDORE vanadium steel 31CrV3, tips of GEDORE vanadium special steel, burnished with ball head, total swivel angle is about 15-20°.