Force Taper drop in headset

TAPERED integrated FORCE headset
1-1/8" - 1-1/2" (1,5"), sealed bearing
upper sealed bearing 41,8 x 45° x 45°
down sealed bearing 51,8 x 36° x 45°
for diameter of up head tube: 42 mm
for diameter of down head tube: 52,2 mm
inner diameter of the lower ring: 39,8 mm
with reduction on 1 1/8'' forks, 45 x 45°
material: alloy, weight: 102 g